feat(tui): add terminal dashboard for SMG - #867

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

tui/src/client.rs (1)

264-266: 🧹 Nitpick | 🔵 Trivial

Avoid creating a new reqwest::Client per streaming request.

Each call to stream_request builds a new reqwest::Client, losing connection pooling benefits and TLS session cache. Consider initializing a dedicated streaming client with the longer timeout in the constructor.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/client.rs` around lines 264 - 266, The streaming code builds a new
reqwest::Client inside stream_request which prevents connection pooling and TLS
session reuse; instead add a dedicated streaming client field (e.g.,
stream_client: reqwest::Client) to the client struct initialized in the
constructor using Client::builder().timeout(Duration::from_secs(120)). Replace
the local builder call in stream_request with a reuse of self.stream_client so
all streaming requests reuse the same client and timeout configuration.

tui/src/state.rs (3)

395-398: ⚠️ Potential issue | 🟠 Major

Bug: throughput_history receives duplicate entries per poll cycle.

When both worker metrics are available (line 398) AND Prometheus metrics succeed with a previous count (line 427), throughput_history gets pushed twice per cycle. This corrupts sparkline data.

Based on the comment at line 423, rps should be the primary source. Consider removing the push at line 398 or making them mutually exclusive.

Also applies to: 424-427

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/state.rs` around lines 395 - 398, throughput_history is being
appended twice per poll cycle because total_throughput is pushed unconditionally
and later rps (from Prometheus) can also push; update the logic so the sparkline
gets a single source per cycle: prefer rps when available by making the first
push conditional (e.g., only push total_throughput into s.throughput_history
when rps is not available) or convert the two pushes into mutually exclusive
branches; touch the block that uses SPARKLINE_CAP and total_throughput as well
as the later branch that pushes rps to ensure only one push to
s.throughput_history happens per cycle.

---

95-105: 🧹 Nitpick | 🔵 Trivial

Consider returning JoinHandle for graceful shutdown.

spawn_poller discards the JoinHandle, preventing the caller from canceling the poller during application shutdown.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/state.rs` around lines 95 - 105, spawn_poller currently drops the
tokio::task::JoinHandle which prevents graceful shutdown; change spawn_poller to
return the JoinHandle (tokio::task::JoinHandle<()>) instead of () by capturing
the result of tokio::spawn and returning it, update callers to hold and
abort/await the handle during shutdown, and ensure the signature in state.rs
(spawn_poller) and any call sites are updated to propagate or store the returned
JoinHandle so the poller can be cancelled or awaited cleanly.

---

451-466: ⚠️ Potential issue | 🟡 Minor

Potential negative latency on Prometheus counter reset.

Line 453 uses plain subtraction (cur_sum - prev_sum) which can yield a negative value if Prometheus restarts and counters reset. This would push negative latency values to avg_latency_history.

Proposed fix

         let (cur_sum, cur_count) = parse_duration_stats(&metrics_text);
         if let (Some(prev_sum), Some(prev_count)) = (s.prev_duration_sum, s.prev_duration_count) {
-            let delta_sum = cur_sum - prev_sum;
+            let delta_sum = if cur_sum >= prev_sum { cur_sum - prev_sum } else { 0.0 };
             let delta_count = cur_count.saturating_sub(prev_count);

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/state.rs` around lines 451 - 466, The subtraction cur_sum - prev_sum
in the parse_duration_stats handling can produce negative delta_sum when
Prometheus resets counters; update the logic in the block around
parse_duration_stats / s.prev_duration_sum / s.prev_duration_count so you
compute delta_sum = (cur_sum as f64 - prev_sum as f64) and then guard: if
delta_sum > 0.0 && delta_count > 0 { avg_latency = delta_sum / delta_count as
f64; push to s.avg_latency_history (evict oldest when >= SPARKLINE_CAP) } else
skip pushing (or treat avg_latency as 0.0 but do not push negative values).
Ensure prev_duration_sum and prev_duration_count are still updated after the
check.

tui/src/ui/tabs.rs (1)

14-32: 🧹 Nitpick | 🔵 Trivial

Use view.index() instead of i + 1 for consistency.

Line 18 calculates the tab number as i + 1, but if View has an index() method that returns the 1-based index, using it would ensure consistency if the view order or numbering ever changes.

Proposed fix

     let tabs: Vec<Span> = View::all()
         .iter()
-        .enumerate()
-        .flat_map(|(i, view)| {
-            let num = format!("{}", i + 1);
+        .flat_map(|view| {
+            let num = format!("{}", view.index());
             let label = view.label();

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/tabs.rs` around lines 14 - 32, Replace the manual index
calculation i + 1 with the view-provided index to keep numbering consistent:
when building the tab Spans in the iterator over View::all(), call view.index()
(instead of using the enumerated i) to produce the tab number string used in
format!("{num}:{label}") — keep using view.label() for the label and the
existing style/active comparison with active to preserve behavior.

tui/src/ui/models.rs (1)

18-18: ⚠️ Potential issue | 🟡 Minor

Align the column header with rendered data.

Line 18 says OWNER, but Line 51 renders m.display_name. Rename the header (or render owner) so the column meaning is accurate.

Minimal fix

-    let header = Row::new(vec!["ID", "OWNER", "WORKERS", "CREATED"]).style(
+    let header = Row::new(vec!["ID", "DISPLAY NAME", "WORKERS", "CREATED"]).style(

Also applies to: 49-52

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/models.rs` at line 18, The header Row::new currently labels the
column "OWNER" but the rendered cell uses m.display_name, causing a mismatch;
update the header text in the Row::new call (the header variable) to match the
rendered field (e.g., "DISPLAY NAME" or "NAME"), or alternatively change the
rendering where m.display_name is used to render an actual owner field; locate
the Row::new(...) that defines header and the rendering loop that uses
m.display_name and make the header and rendered field names consistent.

tui/README.md (2)

66-70: ⚠️ Potential issue | 🟡 Minor

Add language identifiers to fenced code blocks.

Lines 66, 168, and 223 use unlabeled fenced blocks and trigger MD040. Use text for these examples.

Proposed fix

-```
+```text
     WORKERS          CIRCUIT BREAKERS          REQ/S            AVG LATENCY
        5                    5                  250.3              450ms
    all healthy          all closed          51 in-flight        ▓▓▓░░░░░

@@
- +text
a:TUI b:SMG c:Llama-37595 c:Qwen2-39223 j/k scroll G bottom c cycle

@@
-```
+```text
:add <url> [--provider <p>] [--runtime <r>]
:delete <id>
:priority <number>
:cost <number>
:flush-cache
:toggle-health
:quit

</details>


Also applies to: 168-170, 223-231

<details>
<summary>🤖 Prompt for AI Agents</summary>

Verify each finding against the current code and only fix it if needed.

In @tui/README.md around lines 66 - 70, The three unlabeled fenced code blocks
in tui/README.md (the ASCII status table starting with "WORKERS CIRCUIT
BREAKERS", the key legend line starting with "a:TUI b:SMG c:Llama-37595", and
the command list starting with ":add ") are triggering MD040; add the
language identifier text to each opening triple-backtick fence (i.e., change totext for the blocks containing those exact snippets) so the fenced blocks
are properly labeled.

</details>

---

`148-149`: _⚠️ Potential issue_ | _🟡 Minor_

**Use one canonical chat endpoint across the README.**

Line 148 documents `/v1/chat`, while Line 273 documents `/v1/chat/completions`. Keep these consistent to avoid copy/paste misconfiguration.
 


Also applies to: 273-273

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/README.md` around lines 148 - 149, Choose a single canonical chat
endpoint and make all README occurrences consistent: replace
`/v1/chat/completions` with `/v1/chat` (or vice versa) throughout the file, and
update any example request/response blocks, headings, and references that
mention `/v1/chat` or `/v1/chat/completions` so they match; also ensure the
section that contrasts chat with the Responses API still references
`previous_response_id` and `/v1/responses` correctly.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/ui/workers.rs (2)</summary><blockquote>

`269-283`: _⚠️ Potential issue_ | _🟠 Major_

**Use one clamped selection for both table highlight and detail pane.**

Line 272 clamps selection for the table, but Line 281 still indexes with raw `app.selected_index`. After filtering/deletion, highlighted row and detail panel can diverge.
 
<details>
<summary>Proposed fix</summary>

```diff
-    let mut table_state = TableState::default();
-    if row_count > 0 {
-        table_state.select(Some(app.selected_index.min(row_count.saturating_sub(1))));
-    }
+    let selected = if row_count > 0 {
+        Some(app.selected_index.min(row_count.saturating_sub(1)))
+    } else {
+        None
+    };
+    let mut table_state = TableState::default();
+    table_state.select(selected);
@@
-    if let Some(detail_area) = detail_area {
-        if let Some(worker) = filtered.get(app.selected_index) {
+    if let Some(detail_area) = detail_area {
+        if let Some(worker) = selected.and_then(|idx| filtered.get(idx)) {
             detail::render_detail(f, app, worker, detail_area);
         }
     }
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/workers.rs` around lines 269 - 283, Compute a single clamped
selection index and use it for both the table selection and detail lookup
instead of using app.selected_index twice; e.g., create a local let selected =
if row_count > 0 { app.selected_index.min(row_count.saturating_sub(1)) } else {
0 }; call table_state.select(Some(selected)) and then use filtered.get(selected)
when calling detail::render_detail so the highlighted row and detail pane always
refer to the same clamped index.
```

</details>

---

`321-347`: _⚠️ Potential issue_ | _🟠 Major_

**Aggregate all load shards and broaden RPS fallback.**

Line 329 only reads `details.loads.first()`, which under-reports TP>1 workers. Also, Line 337/342 fallback to `worker_rps` only for `grpc://` and `https://`; plain `http://` workers can incorrectly show `0`.

</blockquote></details>
<details>
<summary>tui/src/ui/dialog.rs (2)</summary><blockquote>

`40-43`: _🧹 Nitpick_ | _🔵 Trivial_

**Replace tuple indexing with destructuring for dialog text.**

Line 42 and Line 83 use `info.0/info.1`, which is harder to read in formatted prompts. Destructure once into named locals before `format!`.
 
<details>
<summary>Readability improvement</summary>

```diff
-    let text = format!(
+    let (id, url) = info;
+    let text = format!(
         "Delete worker?\n\nID:  {}\nURL: {}\n\n[y] confirm  [n/Esc] cancel",
-        info.0, info.1,
+        id, url,
     );
```
</details>


Also applies to: 81-84

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/dialog.rs` around lines 40 - 43, Destructure the tuple `info` into
named locals (e.g., `let (id, url) = info;`) before building the dialog text and
anywhere else `info.0` / `info.1` are used (the `format!` call that produces the
"Delete worker?" text and the other dialog usage later), then replace `info.0`
and `info.1` with the new `id` and `url` identifiers to improve readability in
functions handling the dialog text (where `info` is referenced).
```

</details>

---

`19-30`: _🧹 Nitpick_ | _🔵 Trivial_

**Extract shared popup-rect logic to a helper.**

Line 19 and Line 60 duplicate the same centering/layout code. A small helper will keep both dialogs consistent and reduce drift when popup sizing changes.
 
<details>
<summary>Refactor sketch</summary>

```diff
+fn centered_popup(area: ratatui::layout::Rect, width: u16, height: u16) -> ratatui::layout::Rect {
+    let [_, vert, _] = Layout::vertical([
+        Constraint::Fill(1),
+        Constraint::Length(height),
+        Constraint::Fill(1),
+    ]).areas(area);
+    let [popup] = Layout::horizontal([Constraint::Length(width)])
+        .flex(Flex::Center)
+        .areas(vert);
+    popup
+}
@@
-    let area = f.area();
-    let [_, vert, _] = Layout::vertical([...]).areas(area);
-    let [popup] = Layout::horizontal([Constraint::Length(50)]).flex(Flex::Center).areas(vert);
+    let popup = centered_popup(f.area(), 50, 8);
```
</details>


Also applies to: 60-71

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/dialog.rs` around lines 19 - 30, Extract the duplicated
centering/layout code into a small helper (e.g., fn centered_popup(area: Rect,
width: u16, height: u16) -> Rect) that performs the Layout::vertical/Horizontal
sequence using Constraint::Length and Flex::Center and returns the resulting
popup rect; replace both occurrences that currently bind [_, vert, _] and
[popup] with a call to centered_popup(area, 50, 8) (or the appropriate
width/height) so the dialog drawing code uses the single helper instead of
duplicating the Layout logic. Ensure the helper references Layout, Constraint,
and Flex and accepts the input `area` so both existing call sites (the blocks
creating `vert`/`popup`) can be swapped to the new function.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/ui/help.rs (1)</summary><blockquote>

`40-48`: _⚠️ Potential issue_ | _🟡 Minor_

**Rename the second “Navigation” section to avoid ambiguity.**

Line 43 repeats the same section header used at Line 14, but this block is specifically for list movement. Rename it to “Selection” (or similar) so users can distinguish view switching from item navigation.
 
<details>
<summary>Proposed wording change</summary>

```diff
-Navigation
+Selection
   j / Down     Move selection down
   k / Up       Move selection up
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/help.rs` around lines 40 - 48, Update the duplicate section header
inside the string passed to text.push_str so the second "Navigation" block is
renamed to "Selection" (or similar) to clarify it refers to list/item movement
rather than view switching; locate the string literal in tui/src/ui/help.rs
where text.push_str(...) is called and change the header line "Navigation" to
"Selection" while leaving the rest of the key descriptions unchanged.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/ui/logs.rs (1)</summary><blockquote>

`163-207`: _⚠️ Potential issue_ | _🟠 Major_

**Move log file reading out of the render path.**

Line 164 performs blocking disk I/O, and Lines 187-190 walk the full file on each frame. This will cause visible UI stalls as logs grow. Render should read from an already-cached tail maintained by background polling.

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/logs.rs` around lines 163 - 207, render_file_log currently does
blocking disk I/O and recomputes the file tail every frame; move file reading
and line processing into a background poller that maintains a cached tail on the
App and make render_file_log read only that cached data. Implement a background
task (spawned at app init) that reads the log file path, trims to max_lines
(500), strips ANSI and maps to styled Line objects once, and stores the result
in a thread-safe field on App (e.g., Arc<RwLock<Vec<Line>>> or similar); update
the poller at an interval (e.g., 250–500ms) and handle file-not-found there.
Change render_file_log to fetch the precomputed Vec<Line> from App and render it
without doing any file I/O or heavy processing (leave strip_ansi only in the
poller), and keep the existing formatting logic but applied only in the
background updater so rendering is non-blocking.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/ui/footer.rs (1)</summary><blockquote>

`25-37`: _⚠️ Potential issue_ | _🟡 Minor_

**Update the footer hint to advertise all seven views.**

Lines 25 and 37 show `hint("1-5", "view")`, but this PR adds seven tabs (Pulse, Workers, Chat, Logs, Benchmark, Traffic, Mesh) and the README documents `1-7`. Users won't know `6` and `7` are available.




<details>
<summary>🩹 Proposed fix</summary>

```diff
-                    hint("1-5", "view"),
+                    hint("1-7", "view"),
...
-                    hint("1-5", "view"),
+                    hint("1-7", "view"),
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/footer.rs` around lines 25 - 37, The footer currently advertises
only "1-5" views in the hint(...) calls; update both occurrences of hint("1-5",
"view") in the footer generation (the branch bodies shown around the vec![...]
blocks in tui::ui::footer.rs) to advertise "1-7" so the footer reflects the
seven tabs (Pulse, Workers, Chat, Logs, Benchmark, Traffic, Mesh) added by this
PR.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/ui/stats_bar.rs (1)</summary><blockquote>

`78-85`: _⚠️ Potential issue_ | _🟡 Minor_

**Handle the zero-worker case explicitly.**

When `total == 0` and `state.connected`, Lines 81-82 still evaluate `unhealthy == 0` as true and render `"all healthy"`, which is misleading for an empty gateway.




<details>
<summary>🩹 Proposed fix</summary>

```diff
     let health_text = if !state.connected {
         ("--".to_string(), theme::TEXT_MUTED)
+    } else if total == 0 {
+        ("no workers".to_string(), theme::TEXT_MUTED)
     } else if unhealthy == 0 {
         ("all healthy".to_string(), theme::GREEN)
     } else {
         (format!("{unhealthy} unhealthy"), theme::RED)
     };
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/stats_bar.rs` around lines 78 - 85, The health-text logic
incorrectly shows "all healthy" when total == 0; update the health_text
assignment in stats_bar.rs to explicitly handle the zero-worker case before
checking unhealthy: when state.connected is true and total == 0 return a clear
indicator (e.g., "--" or "no workers", with theme::TEXT_MUTED) instead of "all
healthy"; keep the existing branches for state.connected == false, unhealthy ==
0, and unhealthy > 0, referencing the variables unhealthy, total, healthy and
state.connected so the check order is total == 0 first.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/event.rs (1)</summary><blockquote>

`46-53`: _⚠️ Potential issue_ | _🟠 Major_

**Filter to accept only `KeyEventKind::Press` key events.**

The current code forwards all `Event::Key` events including `KeyEventKind::Repeat` and `KeyEventKind::Release` on terminals that emit them (notably Windows). This can cause actions to double-fire.




<details>
<summary>🩹 Proposed fix</summary>

```diff
-use crossterm::event::{Event, EventStream, KeyEvent};
+use crossterm::event::{Event, EventStream, KeyEvent, KeyEventKind};
...
-                            Some(Ok(Event::Key(key)))
-                                if tx.send(AppEvent::Key(key)).is_err() => {
-                                    break;
-                                }
+                            Some(Ok(Event::Key(key)))
+                                if key.kind == KeyEventKind::Press =>
+                            {
+                                if tx.send(AppEvent::Key(key)).is_err() {
+                                    break;
+                                }
+                            }
+                            Some(Ok(Event::Key(_))) => {}
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/event.rs` around lines 46 - 53, The Event::Key branch currently
forwards all key events; change the match arm handling Some(Ok(Event::Key(key)))
so it only sends AppEvent::Key when key.kind == KeyEventKind::Press (ignore
KeyEventKind::Repeat and KeyEventKind::Release) — update the pattern/if guard
around the Event::Key arm and ensure KeyEventKind is referenced/imported so
tx.send(AppEvent::Key(key)) is only called for KeyEventKind::Press.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/ui/detail.rs (2)</summary><blockquote>

`225-231`: _⚠️ Potential issue_ | _🔴 Critical_

**Fix byte-slicing vulnerability in `truncate_str` to prevent panics on non-ASCII worker IDs.**

Line 229 uses `&s[..max.saturating_sub(1)]` which panics if the byte index falls on a non-UTF-8 character boundary. This crashes the TUI when truncating worker IDs containing multi-byte characters.




<details>
<summary>🩹 Proposed fix</summary>

```diff
 fn truncate_str(s: &str, max: usize) -> String {
-    if s.len() <= max {
+    if s.chars().count() <= max {
         s.to_string()
     } else {
-        format!("{}…", &s[..max.saturating_sub(1)])
+        let prefix: String = s.chars().take(max.saturating_sub(1)).collect();
+        format!("{prefix}…")
     }
 }
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/detail.rs` around lines 225 - 231, The truncate_str function
slices by byte index (&s[..max.saturating_sub(1)]) which can panic on multi-byte
UTF-8 characters; change truncate_str to perform a character-aware truncate
(e.g., iterate s.chars().take(...) or use char_indices to find a valid byte
boundary) so you build a new String of at most max-1 characters and then append
the ellipsis, ensuring you handle the case s.len() <= max by returning
s.to_string(); update the function truncate_str accordingly to avoid direct
byte-slicing.
```

</details>

---

`130-143`: _⚠️ Potential issue_ | _🟠 Major_

**Don't derive circuit-breaker state from worker health.**

Lines 131-136 map `worker.is_healthy` to `closed/open`, but these are different signals. A worker can remain healthy (passing health checks) while its circuit breaker is open (tripped due to errors). The detail panel will misreport the actual breaker state.

Pull the breaker state from shared metrics/state instead of proxying through health.

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/detail.rs` around lines 130 - 143, The circuit display currently
derives cb_label and cb_color from worker.is_healthy which is incorrect; instead
query the shared breaker state/store for this worker (e.g., call the circuit
state accessor for the worker id or use worker.circuit_state /
worker.metrics.circuit_open if available) and base cb_label ("open"/"closed")
and cb_color (theme::RED/theme::GREEN) on that boolean. Update the code that
builds the "Circuit:" Line (the Span/Style creation around cb_label/cb_color and
the variables cb_label/cb_color) to use the true circuit boolean from the shared
metrics/state rather than worker.is_healthy. Ensure the accessor you use is
thread-safe and present in scope before replacing references.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/chat.rs (1)</summary><blockquote>

`163-182`: _⚠️ Potential issue_ | _🟠 Major_

**Avoid duplicating the final response on `response.completed` / `response.done`.**

If the stream already emitted `response.output_text.delta` chunks (Lines 163-167), Lines 168-182 append the full completed text again. This duplicates assistant output for backends that send both deltas and a final aggregated response.




<details>
<summary>🩹 Proposed fix</summary>

```diff
     let mut stream = resp.bytes_stream();
     let mut buffer = String::new();
+    let mut saw_text_delta = false;
...
                         "response.output_text.delta" => {
                             if let Some(delta) = parsed["delta"].as_str() {
+                                saw_text_delta = true;
                                 let _ = tx.send(delta.to_string());
                             }
                         }
                         "response.completed" | "response.done" => {
-                            // Extract text from completed response (sglang sends full text here, not deltas)
-                            if let Some(outputs) = parsed["response"]["output"].as_array() {
+                            // Only extract if no deltas were received (some backends send full text here)
+                            if !saw_text_delta {
+                                if let Some(outputs) = parsed["response"]["output"].as_array() {
...
+                                }
+                            }
                             let _ = tx.send("\n[DONE]".to_string());
                             return;
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/chat.rs` around lines 163 - 182, The completed/done branch duplicates
assistant output when prior "response.output_text.delta" chunks were already
sent; introduce a boolean flag (e.g., has_sent_deltas or saw_delta) in the
surrounding scope, set it to true inside the "response.output_text.delta" arm
where tx.send(delta.to_string()) is called, and in the "response.completed" |
"response.done" arm skip sending the full aggregated text (and only send the
final "[DONE]" marker) if that flag is true; ensure the flag is referenced where
tx.send is used so only one representation of the assistant response is emitted.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/ui/action_menu.rs (1)</summary><blockquote>

`145-167`: _⚠️ Potential issue_ | _🟠 Major_

**Remove the per-frame `Box::leak` allocations in SelectModel menu rendering.**

Lines 151 and 155 leak numbering strings every frame the model picker is displayed. Since `render_add_menu` is called from the per-frame root renderer, keeping the SelectModel modal open causes unbounded heap growth.




<details>
<summary>🩹 Proposed fix</summary>

Change `render_menu` to accept owned `String` items:

```diff
-fn render_menu(f: &mut Frame, title: &str, items: &[(&str, &str, &str)]) {
+fn render_menu(f: &mut Frame, title: &str, items: &[(String, String, String)]) {
...
-            Span::styled(
-                format!(" [{num}] "),
+            Span::styled(
+                format!(" [{}] ", num),
...
-            Span::styled(*label, Style::default().fg(theme::TEXT)),
+            Span::styled(label.as_str(), Style::default().fg(theme::TEXT)),

// In SelectModel case:
-                let num = Box::leak(format!("{}", i + 1).into_boxed_str()) as &str;
-                (num, p.label(), format!("TP={}", p.tp()))
+                ((i + 1).to_string(), p.label(), format!("TP={}", p.tp()))
...
-            let custom_num = Box::leak(format!("{}", presets.len() + 1).into_boxed_str()) as &str;
+            let custom_num = (presets.len() + 1).to_string();
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/action_menu.rs` around lines 145 - 167, The SelectModel branch is
leaking numeric labels via Box::leak each frame; stop allocating leaked &'static
str by switching to owned strings and updating the menu renderer. Build items as
Vec<(String, String, String)> (create the numeric label with format! without
Box::leak) in the AddMenuState::SelectModel arm, then change render_menu to
accept owned String tuples (or a slice of (String,String,String)) instead of
&str references and update any call sites accordingly so you can pass the owned
items directly without leaking memory.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/ui/pulse.rs (1)</summary><blockquote>

`21-38`: _⚠️ Potential issue_ | _🟠 Major_

**Keep request stats in the narrow layout.**

This branch still returns after `render_throughput_compact()`, so small terminals never render latency, connections, or in-flight request stats. The compact vertical layout needs an extra row for `render_request_stats()`.

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/pulse.rs` around lines 21 - 38, The narrow-layout branch returns
too early and omits request stats; add another row to the constraints Vec
(another Constraint::Fill(1)) when building the single-column layout and call
render_request_stats(f, &state, rows[i]) in the sequence before the final
render_throughput_compact (adjusting the index increments to account for the
extra row and respecting has_node_panel), so Layout::vertical(...).split(area)
produces an extra rows entry and render_request_stats is invoked for small
terminals.
```

</details>

</blockquote></details>
<details>
<summary>tui/src/main.rs (1)</summary><blockquote>

`158-170`: _⚠️ Potential issue_ | _🟠 Major_

**Protect terminal setup with a guard, not only the panic hook.**

Any early `?` after raw mode / alternate-screen setup but before normal teardown will exit without restoring the shell state. Keep a cleanup guard alive from the first successful terminal mutation and disarm it only after explicit teardown succeeds.

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
Verify each finding against the current code and only fix it if needed.

In `@tui/src/main.rs` around lines 158 - 170, The terminal setup currently relies
only on a panic hook and can leak terminal state if an early `?` returns; create
a RAII guard (e.g., a small struct like TerminalGuard with Drop that calls
disable_raw_mode() and executes LeaveAlternateScreen) and instantiate it
immediately after the first successful mutation (after enable_raw_mode() and
EnterAlternateScreen execute!); keep a method on the guard to disarm or mark
successful teardown and call that when you run the normal cleanup (before
Terminal::draw/Terminal::new teardown completes); leave panic_hook/set_hook
as-is but rely on the guard to ensure cleanup on any early returns or normal
exit.
```

</details>

</blockquote></details>

</blockquote></details>

<details>
<summary>🤖 Prompt for all review comments with AI agents</summary>

Verify each finding against the current code and only fix it if needed.

Inline comments:
In @tui/src/app.rs:

• Around line 603-607: The quit-on-q behavior in handle_chat_key currently
  triggers whenever KeyCode::Char('q') and !self.chat_streaming, preventing typing
  'q' into the chat; update the match arm so quitting only occurs when the input
  buffer is empty (match the same empty-input gating used by other chat shortcuts)
  — i.e., require both !self.chat_streaming and
  self.<input_buffer_field>.is_empty() before setting self.should_quit = true;
  modify the KeyCode::Char('q') branch accordingly so normal typing of 'q' in the
  chat box is allowed.
• Line 553: The unknown-command fallback is leaking typed secrets because the
  "api-key " action isn't handled and falls through to the match arm that calls
  set_status(...) which appends the full message into status_message and
  log_entries; fix this by adding an explicit handler for the "api-key " command
  (or by detecting the "api-key " prefix before the match) that accepts the
  entered key but does not echo it back verbatim — instead call set_status with a
  masked message like "API key updated" (or call a new method that updates state
  without logging the secret), and ensure set_status is not given the raw secret;
  reference the command parsing match in app.rs and the set_status, status_message
  and log_entries symbols when implementing this change.
• Around line 506-523: The "toggle-health" branch always sets
  disable_health_check: Some(true) so it never re-enables checks; change it to
  compute the next boolean from the selected worker's current state (e.g., via
  self.selected_worker_id() -> lookup worker record/state and read
  worker.health.disable_health_check) and pass the inverted value into
  openai_protocol::worker::HealthCheckUpdate.disable_health_check before calling
  self.client.update_worker(&id, &update). Update the same logic in the other
  occurrence (lines ~876-900) or, if you intend a one-way action, rename the
  action/label to "disable-health" to reflect that it only disables.
• Around line 765-779: The selected worker resolution must use the same filtered
  view as the UI; change the logic so all actions (start_delete,
  priority/cost/flush/toggle handlers) map selected_index into the filtered worker
  list rather than the unfiltered wl.workers. Implement a single helper (e.g.,
  get_filtered_workers or refactor the filtering block) that returns the Vec of
  filtered worker refs using the active_filter logic currently in start_delete,
  and have selected_worker_id(), selected_worker_url(), and the action methods
  call that helper and index into its result; ensure you handle out-of-range
  selected_index safely (None) and replace any direct indexing into wl.workers
  with lookups into the filtered list.
• Around line 727-745: The current loop in state.workers processing (iterating
  workers.workers and checking w.runtime_type and w.models) wrongly filters
  external worker models to those starting with "gpt-5.4", dropping valid external
  provider model IDs; remove the is_external && !m.id.starts_with("gpt-5.4") check
  so you always collect each reported m.id into models (checking duplicates as
  already done). Keep the wildcard handling for when w.models.is_empty(), but stop
  hard-coding "gpt-5.4-nano" as the placeholder — instead use a provider-specific
  default if the worker exposes one (e.g., a w.default_model or similar) or fall
  back to a generic "external-model" placeholder so external providers
  (Anthropic/xAI/Gemini/OpenAI variants) are selectable.
• Around line 1217-1251: On registration failure in the add_worker() match arm,
  undo the prior spawn/claim: remove the corresponding entry from
  self.worker_children (the tuple containing desc and child), terminate or kill
  the spawned child process (the child from the tuple) and await/clean up its
  handle, and remove the claimed GPU entry from self.claimed_gpus keyed by url
  (which was set from selected_gpus); keep the current error log and status
  updates but ensure the worker process is stopped and the GPU claim released to
  avoid phantom busy GPUs.
• Around line 444-453: The :delete branch currently calls
  self.client.delete_worker(...) directly, which only removes the worker from the
  gateway and leaves local resources (spawned backend and claimed_gpus) orphaned;
  change this branch to reuse the same cleanup/confirmation flow used by the
  interactive delete dialog (the block later in the file that kills the spawned
  backend and releases claimed_gpus) instead of calling self.client.delete_worker
  directly — either call that existing confirmation/cleanup function or extract
  the cleanup logic into a shared method (e.g., delete_worker_with_cleanup or
  confirm_and_delete_worker) and invoke it from the Some("delete") arm, keeping
  the same status updates via self.set_status.

In @tui/src/event.rs:

• Around line 31-32: Replace the comment prefix "Safety:" with "INVARIANT:" in
  the inline doc above the fire-and-forget event reader loop comment (the comment
  directly above the #[expect(clippy::disallowed_methods)] attribute in event.rs)
  so it follows the repo convention of using INVARIANT: for assumptions in safe
  code; keep the rest of the text unchanged and only rename the marker.

In @tui/src/main.rs:

• Around line 197-199: The current extract_port function misparses URLs with
  paths because it splits on ':' and grabs the trailing segment; replace this
  brittle string logic with proper URL parsing: use
  url::Url::parse(url).ok().and_then(|u| u.port()) (i.e., call Url::parse in
  extract_port and return u.port()), so inputs like
  "http://localhost:31000/health" return 31000; add the url crate if it's not
  already a dependency and update extract_port to use Url parsing instead of
  rsplit.

In @tui/src/ui/chat.rs:

• Around line 154-164: The current wrapped-line calculation uses byte counts
  (span.content.len()) which miscounts Unicode/emoji/CJK; replace that with
  display width using unicode-width's UnicodeWidthStr::width (add the
  unicode-width crate and import UnicodeWidthStr), i.e. compute each span's
  display width via span.content.width(), sum those to get line_width, then
  perform the same ceil division by width to produce the u16 contribution to
  total_lines (refer to variables/expressions: total_lines, lines, line.spans,
  span.content, and width).

In @tui/src/ui/detail.rs:

• Around line 32-34: Change the comment marker from "Safety:" to "INVARIANT:"
  for the non-unsafe RwLock read assumption: update the comment above the call to
  app.state.read().unwrap() to begin with "INVARIANT:" and retain the explanation
  that the RwLock is not poisoned (and keep the #[expect(clippy::unwrap_used)]
  attribute) so the repository convention of reserving SAFETY: for unsafe blocks
  is followed.

In @tui/src/ui/pulse.rs:

• Around line 371-389: In render_throughput_compact the UI reads latest from
  throughput_history but labels it as req/s and also uses throughput_history
  emptiness to decide "No data"; change the logic to use requests_per_sec_history
  instead: check requests_per_sec_history.is_empty() for the "No data" early
  return and compute latest from
  requests_per_sec_history.back().copied().unwrap_or(0.0), keeping the displayed
  label "Latest: {latest:.1} req/s"; leave throughput_history usage elsewhere
  unchanged.

In @tui/src/ui/sparkline.rs:

• Around line 46-50: Clamp the input ratio in gauge_bar to the [0.0, 1.0] range
  before computing pct and filled so the displayed percentage (pct) and bar fill
  stay consistent; inside pub fn gauge_bar(ratio: f64, width: usize) create a
  local let r = ratio.clamp(0.0, 1.0) (or equivalent), then compute pct from r and
  compute filled using r and width, leaving empty and return values unchanged.

In @tui/src/ui/workers.rs:

• Around line 299-304: The truncate() function currently slices by byte index
  (&s[..max - 1]) which can panic on multi-byte UTF-8 characters (like emoji) —
  replace byte-slicing with character-based truncation: when s.len() > max,
  collect the first (max - 1) Unicode scalar values (e.g., s.chars().take(max -
  1).collect::()) and append the ellipsis; keep the original behavior for
  short strings. Update the truncate function (used for worker.id) to avoid any
  direct byte-index slicing and operate on chars to ensure UTF-8 safety.

---

Duplicate comments:
In @tui/README.md:

• Around line 66-70: The three unlabeled fenced code blocks in tui/README.md
  (the ASCII status table starting with "WORKERS CIRCUIT BREAKERS", the
  key legend line starting with "a:TUI b:SMG c:Llama-37595", and the command
  list starting with ":add ") are triggering MD040; add the language
  identifier text to each opening triple-backtick fence (i.e., change ``` to

properly labeled.
- Around line 148-149: Choose a single canonical chat endpoint and make all
README occurrences consistent: replace `/v1/chat/completions` with `/v1/chat`
(or vice versa) throughout the file, and update any example request/response
blocks, headings, and references that mention `/v1/chat` or
`/v1/chat/completions` so they match; also ensure the section that contrasts
chat with the Responses API still references `previous_response_id` and
`/v1/responses` correctly.

In `@tui/src/chat.rs`:
- Around line 163-182: The completed/done branch duplicates assistant output
when prior "response.output_text.delta" chunks were already sent; introduce a
boolean flag (e.g., has_sent_deltas or saw_delta) in the surrounding scope, set
it to true inside the "response.output_text.delta" arm where
tx.send(delta.to_string()) is called, and in the "response.completed" |
"response.done" arm skip sending the full aggregated text (and only send the
final "[DONE]" marker) if that flag is true; ensure the flag is referenced where
tx.send is used so only one representation of the assistant response is emitted.

In `@tui/src/client.rs`:
- Around line 264-266: The streaming code builds a new reqwest::Client inside
stream_request which prevents connection pooling and TLS session reuse; instead
add a dedicated streaming client field (e.g., stream_client: reqwest::Client) to
the client struct initialized in the constructor using
Client::builder().timeout(Duration::from_secs(120)). Replace the local builder
call in stream_request with a reuse of self.stream_client so all streaming
requests reuse the same client and timeout configuration.

In `@tui/src/event.rs`:
- Around line 46-53: The Event::Key branch currently forwards all key events;
change the match arm handling Some(Ok(Event::Key(key))) so it only sends
AppEvent::Key when key.kind == KeyEventKind::Press (ignore KeyEventKind::Repeat
and KeyEventKind::Release) — update the pattern/if guard around the Event::Key
arm and ensure KeyEventKind is referenced/imported so
tx.send(AppEvent::Key(key)) is only called for KeyEventKind::Press.

In `@tui/src/main.rs`:
- Around line 158-170: The terminal setup currently relies only on a panic hook
and can leak terminal state if an early `?` returns; create a RAII guard (e.g.,
a small struct like TerminalGuard with Drop that calls disable_raw_mode() and
executes LeaveAlternateScreen) and instantiate it immediately after the first
successful mutation (after enable_raw_mode() and EnterAlternateScreen execute!);
keep a method on the guard to disarm or mark successful teardown and call that
when you run the normal cleanup (before Terminal::draw/Terminal::new teardown
completes); leave panic_hook/set_hook as-is but rely on the guard to ensure
cleanup on any early returns or normal exit.

In `@tui/src/state.rs`:
- Around line 395-398: throughput_history is being appended twice per poll cycle
because total_throughput is pushed unconditionally and later rps (from
Prometheus) can also push; update the logic so the sparkline gets a single
source per cycle: prefer rps when available by making the first push conditional
(e.g., only push total_throughput into s.throughput_history when rps is not
available) or convert the two pushes into mutually exclusive branches; touch the
block that uses SPARKLINE_CAP and total_throughput as well as the later branch
that pushes rps to ensure only one push to s.throughput_history happens per
cycle.
- Around line 95-105: spawn_poller currently drops the tokio::task::JoinHandle
which prevents graceful shutdown; change spawn_poller to return the JoinHandle
(tokio::task::JoinHandle<()>) instead of () by capturing the result of
tokio::spawn and returning it, update callers to hold and abort/await the handle
during shutdown, and ensure the signature in state.rs (spawn_poller) and any
call sites are updated to propagate or store the returned JoinHandle so the
poller can be cancelled or awaited cleanly.
- Around line 451-466: The subtraction cur_sum - prev_sum in the
parse_duration_stats handling can produce negative delta_sum when Prometheus
resets counters; update the logic in the block around parse_duration_stats /
s.prev_duration_sum / s.prev_duration_count so you compute delta_sum = (cur_sum
as f64 - prev_sum as f64) and then guard: if delta_sum > 0.0 && delta_count > 0
{ avg_latency = delta_sum / delta_count as f64; push to s.avg_latency_history
(evict oldest when >= SPARKLINE_CAP) } else skip pushing (or treat avg_latency
as 0.0 but do not push negative values). Ensure prev_duration_sum and
prev_duration_count are still updated after the check.

In `@tui/src/ui/action_menu.rs`:
- Around line 145-167: The SelectModel branch is leaking numeric labels via
Box::leak each frame; stop allocating leaked &'static str by switching to owned
strings and updating the menu renderer. Build items as Vec<(String, String,
String)> (create the numeric label with format! without Box::leak) in the
AddMenuState::SelectModel arm, then change render_menu to accept owned String
tuples (or a slice of (String,String,String)) instead of &str references and
update any call sites accordingly so you can pass the owned items directly
without leaking memory.

In `@tui/src/ui/detail.rs`:
- Around line 225-231: The truncate_str function slices by byte index
(&s[..max.saturating_sub(1)]) which can panic on multi-byte UTF-8 characters;
change truncate_str to perform a character-aware truncate (e.g., iterate
s.chars().take(...) or use char_indices to find a valid byte boundary) so you
build a new String of at most max-1 characters and then append the ellipsis,
ensuring you handle the case s.len() <= max by returning s.to_string(); update
the function truncate_str accordingly to avoid direct byte-slicing.
- Around line 130-143: The circuit display currently derives cb_label and
cb_color from worker.is_healthy which is incorrect; instead query the shared
breaker state/store for this worker (e.g., call the circuit state accessor for
the worker id or use worker.circuit_state / worker.metrics.circuit_open if
available) and base cb_label ("open"/"closed") and cb_color
(theme::RED/theme::GREEN) on that boolean. Update the code that builds the
"Circuit:" Line (the Span/Style creation around cb_label/cb_color and the
variables cb_label/cb_color) to use the true circuit boolean from the shared
metrics/state rather than worker.is_healthy. Ensure the accessor you use is
thread-safe and present in scope before replacing references.

In `@tui/src/ui/dialog.rs`:
- Around line 40-43: Destructure the tuple `info` into named locals (e.g., `let
(id, url) = info;`) before building the dialog text and anywhere else `info.0` /
`info.1` are used (the `format!` call that produces the "Delete worker?" text
and the other dialog usage later), then replace `info.0` and `info.1` with the
new `id` and `url` identifiers to improve readability in functions handling the
dialog text (where `info` is referenced).
- Around line 19-30: Extract the duplicated centering/layout code into a small
helper (e.g., fn centered_popup(area: Rect, width: u16, height: u16) -> Rect)
that performs the Layout::vertical/Horizontal sequence using Constraint::Length
and Flex::Center and returns the resulting popup rect; replace both occurrences
that currently bind [_, vert, _] and [popup] with a call to centered_popup(area,
50, 8) (or the appropriate width/height) so the dialog drawing code uses the
single helper instead of duplicating the Layout logic. Ensure the helper
references Layout, Constraint, and Flex and accepts the input `area` so both
existing call sites (the blocks creating `vert`/`popup`) can be swapped to the
new function.

In `@tui/src/ui/footer.rs`:
- Around line 25-37: The footer currently advertises only "1-5" views in the
hint(...) calls; update both occurrences of hint("1-5", "view") in the footer
generation (the branch bodies shown around the vec![...] blocks in
tui::ui::footer.rs) to advertise "1-7" so the footer reflects the seven tabs
(Pulse, Workers, Chat, Logs, Benchmark, Traffic, Mesh) added by this PR.

In `@tui/src/ui/help.rs`:
- Around line 40-48: Update the duplicate section header inside the string
passed to text.push_str so the second "Navigation" block is renamed to
"Selection" (or similar) to clarify it refers to list/item movement rather than
view switching; locate the string literal in tui/src/ui/help.rs where
text.push_str(...) is called and change the header line "Navigation" to
"Selection" while leaving the rest of the key descriptions unchanged.

In `@tui/src/ui/logs.rs`:
- Around line 163-207: render_file_log currently does blocking disk I/O and
recomputes the file tail every frame; move file reading and line processing into
a background poller that maintains a cached tail on the App and make
render_file_log read only that cached data. Implement a background task (spawned
at app init) that reads the log file path, trims to max_lines (500), strips ANSI
and maps to styled Line objects once, and stores the result in a thread-safe
field on App (e.g., Arc<RwLock<Vec<Line>>> or similar); update the poller at an
interval (e.g., 250–500ms) and handle file-not-found there. Change
render_file_log to fetch the precomputed Vec<Line> from App and render it
without doing any file I/O or heavy processing (leave strip_ansi only in the
poller), and keep the existing formatting logic but applied only in the
background updater so rendering is non-blocking.

In `@tui/src/ui/models.rs`:
- Line 18: The header Row::new currently labels the column "OWNER" but the
rendered cell uses m.display_name, causing a mismatch; update the header text in
the Row::new call (the header variable) to match the rendered field (e.g.,
"DISPLAY NAME" or "NAME"), or alternatively change the rendering where
m.display_name is used to render an actual owner field; locate the Row::new(...)
that defines header and the rendering loop that uses m.display_name and make the
header and rendered field names consistent.

In `@tui/src/ui/pulse.rs`:
- Around line 21-38: The narrow-layout branch returns too early and omits
request stats; add another row to the constraints Vec (another
Constraint::Fill(1)) when building the single-column layout and call
render_request_stats(f, &state, rows[i]) in the sequence before the final
render_throughput_compact (adjusting the index increments to account for the
extra row and respecting has_node_panel), so Layout::vertical(...).split(area)
produces an extra rows entry and render_request_stats is invoked for small
terminals.

In `@tui/src/ui/stats_bar.rs`:
- Around line 78-85: The health-text logic incorrectly shows "all healthy" when
total == 0; update the health_text assignment in stats_bar.rs to explicitly
handle the zero-worker case before checking unhealthy: when state.connected is
true and total == 0 return a clear indicator (e.g., "--" or "no workers", with
theme::TEXT_MUTED) instead of "all healthy"; keep the existing branches for
state.connected == false, unhealthy == 0, and unhealthy > 0, referencing the
variables unhealthy, total, healthy and state.connected so the check order is
total == 0 first.

In `@tui/src/ui/tabs.rs`:
- Around line 14-32: Replace the manual index calculation i + 1 with the
view-provided index to keep numbering consistent: when building the tab Spans in
the iterator over View::all(), call view.index() (instead of using the
enumerated i) to produce the tab number string used in format!("{num}:{label}")
— keep using view.label() for the label and the existing style/active comparison
with active to preserve behavior.

In `@tui/src/ui/workers.rs`:
- Around line 269-283: Compute a single clamped selection index and use it for
both the table selection and detail lookup instead of using app.selected_index
twice; e.g., create a local let selected = if row_count > 0 {
app.selected_index.min(row_count.saturating_sub(1)) } else { 0 }; call
table_state.select(Some(selected)) and then use filtered.get(selected) when
calling detail::render_detail so the highlighted row and detail pane always
refer to the same clamped index.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 0fdd8da1-311b-4f9f-9662-e2c4b7ae6f72

📥 Commits

Reviewing files that changed from the base of the PR and between 263b44d and 50b7078.

⛔ Files ignored due to path filters (2)

• tui/assets/add-worker.gif is excluded by !**/*.gif
• tui/assets/tui-demo.gif is excluded by !**/*.gif

📒 Files selected for processing (28)

• .pre-commit-config.yaml
• Cargo.toml
• tui/Cargo.toml
• tui/README.md
• tui/src/app.rs
• tui/src/chat.rs
• tui/src/client.rs
• tui/src/event.rs
• tui/src/lib.rs
• tui/src/main.rs
• tui/src/state.rs
• tui/src/types.rs
• tui/src/ui/action_menu.rs
• tui/src/ui/chat.rs
• tui/src/ui/detail.rs
• tui/src/ui/dialog.rs
• tui/src/ui/filter.rs
• tui/src/ui/footer.rs
• tui/src/ui/help.rs
• tui/src/ui/logs.rs
• tui/src/ui/mod.rs
• tui/src/ui/models.rs
• tui/src/ui/pulse.rs
• tui/src/ui/sparkline.rs
• tui/src/ui/stats_bar.rs
• tui/src/ui/tabs.rs
• tui/src/ui/theme.rs
• tui/src/ui/workers.rs

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

tui/src/event.rs (2)

31-32: 🧹 Nitpick | 🔵 Trivial

Use INVARIANT: instead of Safety: here.

This is documenting a safe-code assumption, not an unsafe soundness requirement.

Based on learnings: "In Rust code across the repository, use the marker INVARIANT: to document assumptions in safe code. Reserve SAFETY: for explaining why unsafe blocks are sound."

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/event.rs` around lines 31 - 32, Change the comment prefix from
"Safety:" to "INVARIANT:" for the safe-code assumption in the event reader
description so it follows repository convention; update the comment that
currently reads "// Safety: fire-and-forget event reader loop that runs for the
app's lifetime" to use "INVARIANT:" instead (this is right above the
#[expect(clippy::disallowed_methods)] attribute in event.rs and refers to the
event reader loop assumption).

---

1-1: ⚠️ Potential issue | 🟠 Major

Only enqueue KeyEventKind::Press events.

Forwarding every Event::Key will double-fire actions on terminals that emit Repeat/Release. Filter here so the rest of the app only sees key presses.

🩹 Proposed fix

-use crossterm::event::{Event, EventStream, KeyEvent};
+use crossterm::event::{Event, EventStream, KeyEvent, KeyEventKind};
...
-                            Some(Ok(Event::Key(key)))
-                                if tx.send(AppEvent::Key(key)).is_err() => {
-                                    break;
-                                }
+                            Some(Ok(Event::Key(key))) if key.kind == KeyEventKind::Press => {
+                                if tx.send(AppEvent::Key(key)).is_err() {
+                                    break;
+                                }
+                            }
+                            Some(Ok(Event::Key(_))) => {}

In crossterm 0.28.x, can Event::Key emit KeyEventKind::Repeat/Release, and do Ratatui examples recommend handling only KeyEventKind::Press to avoid duplicate key processing?

Also applies to: 44-55

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/event.rs` at line 1, The event forwarder is emitting all crossterm
Event::Key variants causing duplicate actions on Repeat/Release; update the code
that matches Event::Key (in tui/src/event.rs) to only enqueue/forward when the
contained KeyEvent has kind == KeyEventKind::Press (i.e., filter Event::Key(k)
by k.kind == KeyEventKind::Press) so the rest of the app receives only key
presses.

tui/src/ui/workers.rs (3)

299-304: ⚠️ Potential issue | 🔴 Critical

Make truncate() UTF-8 safe.

This currently treats max as a byte limit, not a character limit, so non-ASCII IDs/URLs/model lists can truncate too early or panic when &s[..max - 1] lands inside a codepoint.

🩹 Proposed fix

 fn truncate(s: &str, max: usize) -> String {
-    if s.len() <= max {
+    if s.chars().count() <= max {
         s.to_string()
     } else {
-        format!("{}…", &s[..max - 1])
+        let head: String = s.chars().take(max.saturating_sub(1)).collect();
+        format!("{head}…")
     }
 }

In Rust, can slicing a &str with byte indices like &s[..n] panic when n is not on a UTF-8 character boundary?

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/workers.rs` around lines 299 - 304, The truncate(s: &str, max:
usize) function currently slices by bytes which can panic on UTF-8 boundaries;
change it to treat max as a character limit by operating on chars rather than
byte indices (e.g., iterate s.chars() and collect up to max characters,
appending the ellipsis when the original string has more than max chars). Update
truncate to check character count, return s.to_string() when length <= max,
otherwise build a new String from the first max-1 characters (or first max and
then replace last with ellipsis per existing behavior) using char iteration so
all slicing is UTF-8 safe; reference function name truncate in this file.

---

269-283: ⚠️ Potential issue | 🟠 Major

Reuse the clamped selection for the detail pane.

The table highlight clamps selected_index, but Lines 280-282 still use the raw index. After filtering or worker deletion, the highlighted row can differ from the detail pane or leave it blank.

🩹 Proposed fix

-    let mut table_state = TableState::default();
-    if row_count > 0 {
-        table_state.select(Some(app.selected_index.min(row_count.saturating_sub(1))));
-    }
+    let selected = if row_count > 0 {
+        Some(app.selected_index.min(row_count.saturating_sub(1)))
+    } else {
+        None
+    };
+
+    let mut table_state = TableState::default();
+    table_state.select(selected);
@@
-    if let Some(detail_area) = detail_area {
-        if let Some(worker) = filtered.get(app.selected_index) {
+    if let Some(detail_area) = detail_area {
+        if let Some(worker) = selected.and_then(|idx| filtered.get(idx)) {
             detail::render_detail(f, app, worker, detail_area);
         }
     }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/workers.rs` around lines 269 - 283, The detail pane currently uses
the raw app.selected_index which can be out-of-sync with the clamped selection
used for the table; after you call table_state.select(...) read the clamped
index from table_state.selected() and use that to look up the worker for
detail::render_detail instead of app.selected_index. Concretely, after building
table_state use something like if let Some(clamped) = table_state.selected() {
if let Some(worker) = filtered.get(clamped) { detail::render_detail(f, app,
worker, detail_area); } } so the detail pane always follows the table's actual
highlighted row.

---

326-346: ⚠️ Potential issue | 🟠 Major

Don't drop extra load entries or plain-HTTP fallbacks.

details.loads.first() under-reports TP>1 workers, and the fallback only covers grpc:///https://. Plain http:// workers fall through to "0" whenever /get_loads is unavailable even though worker_rps is already available.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/workers.rs` around lines 326 - 346, The current code drops extra
load entries by using details.loads.first() and also fails to use worker_rps for
plain "http://" fallbacks; change the logic in the worker-load formatting block
to (1) aggregate across all entries in details.loads (e.g., total_running =
sum(load.num_running_reqs) and token_usage = max(load.token_usage) or a sensible
aggregate) instead of details.loads.first(), and (2) move/extend the
rps-fallback to cover plain "http://" (or, more generally, if worker_rps
contains an entry use that) so that when /get_loads is missing you return
(format!("{rps:.1} r/s"), "N/A".to_string()) rather than ("0", "0.0%").
Reference symbols: loads.get(worker_url), wl.details, details.loads,
worker_url.starts_with(...), and worker_rps.get(worker_url).

tui/src/ui/tabs.rs (1)

14-18: 🧹 Nitpick | 🔵 Trivial

Use View::index() as the tab number source.

enumerate() + i + 1 duplicates numbering logic that View already owns, so the rendered shortcut can drift if the enum numbering changes. view.index() keeps the tab label aligned with the rest of the navigation code.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/tabs.rs` around lines 14 - 18, The tab numbering currently uses
enumerate() and i + 1 when building tabs from View::all(), which duplicates
View's own numbering logic; update the closure that constructs the tab label
(the block producing num = format!("{}", i + 1)) to use view.index() as the
source of the tab number instead (call view.index() and format that value),
removing reliance on enumerate() for numbering so the rendered shortcut stays
consistent with View::index() across the codebase.

tui/src/ui/footer.rs (1)

25-25: ⚠️ Potential issue | 🟡 Minor

Advertise all seven views in the footer.

Both normal-mode hint sets still say 1-5, but the tab bar exposes seven views. That makes Traffic and Mesh look unavailable from the keyboard.

🩹 Proposed fix

-                    hint("1-5", "view"),
+                    hint("1-7", "view"),
...
-                    hint("1-5", "view"),
+                    hint("1-7", "view"),

Also applies to: 37-37

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/footer.rs` at line 25, The footer currently advertises only "1-5"
in the normal-mode hint sets, but the UI exposes seven views; update the two
hint label calls so the footer advertises all seven views. Locate the
hint("1-5", "view") invocations in tui/src/ui/footer.rs (the two occurrences
around the normal-mode hint blocks) and change the displayed range to "1-7"
(e.g., hint("1-7", "view")) so both normal-mode hint sets advertise all seven
views including Traffic and Mesh.

tui/src/ui/models.rs (1)

18-18: ⚠️ Potential issue | 🟡 Minor

Fix the OWNER column label or the rendered value.

Line 18 says OWNER, but Line 51 renders m.display_name. That makes the table misleading as soon as display name differs from the owner. Rename the header or render the actual owner field.

Also applies to: 49-51

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/models.rs` at line 18, Header text "OWNER" in the table (created
via Row::new in the header variable) does not match the rendered cell value
which uses m.display_name; change one to match the other by either renaming the
header to "NAME" (or "OWNER / NAME") where header is built in Row::new, or
update the cell renderer to display the actual owner field (e.g., replace
m.display_name with m.owner or m.owner_id) in the code that builds the row cells
around where m is used (lines rendering the row, e.g., the code around
m.display_name). Ensure the header label and the value source are consistent
across the table rendering.

tui/src/ui/logs.rs (1)

163-190: ⚠️ Potential issue | 🟠 Major

Move log-file reads and tailing out of render_file_log().

read_to_string() plus content.lines().collect() runs on every frame, so a large or fast-growing log will stall repaint/input exactly when the Logs view is open. Populate a cached tail in the background poller and render only that cached slice here.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/logs.rs` around lines 163 - 190, render_file_log currently reads
and parses the entire file on every frame (via std::fs::read_to_string and
content.lines().collect), which blocks the UI; move all file I/O and tailing
into the background poller and have render_file_log only render a cached tail.
Specifically: add a cached tail field (e.g., App.cached_log_tail: Vec<Line> or
String) updated by the poller, change the poller to read the file, compute the
last N lines (max_lines=500), and store the result into that cache using a
thread-safe mechanism (Arc<Mutex<...>> or a channel update on App), and modify
render_file_log to skip read_to_string and instead render from
App.cached_log_tail (still using the same Block/Paragraph rendering and the
existing title/label logic).

tui/src/ui/chat.rs (2)

22-37: ⚠️ Potential issue | 🟡 Minor

Show the real chat-completions path in the title.

For ChatEndpoint::Chat, this renders /v1/chat, but tui/src/chat.rs actually posts to /v1/chat/completions. The title becomes misleading when users compare the TUI against logs/docs.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/chat.rs` around lines 22 - 37, The title shows an incorrect path
for ChatEndpoint::Chat; update the title formatting in chat UI to display the
actual POST path used by the client ("/v1/chat/completions") instead of
"/v1/chat" when app.chat_endpoint is Chat; locate the code that builds the title
(uses app.chat_endpoint, ChatEndpoint::Chat and app.chat_endpoint.label()) and
either change the label() call for Chat to return "chat/completions" or
special-case Chat in this formatting to insert "/v1/chat/completions" so the
displayed path matches the request path used by tui/src/chat.rs.

---

152-164: ⚠️ Potential issue | 🟡 Minor

Use display width, not byte length, for scroll math.

span.content.len() counts bytes, so emoji/CJK text skews total_lines and makes the wrapped scroll range drift from what Ratatui actually renders.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/chat.rs` around lines 152 - 164, The scroll math is using byte
length via span.content.len(), which miscalculates display width for emoji/CJK;
change the width calculation in the total_lines mapping to use a display-width
function (e.g. UnicodeWidthStr::width) on each span's content instead of len(),
keep the max(1) and ceil division logic, and add the necessary import for the
unicode-width helper so total_lines reflects visual columns rather than byte
count.

tui/src/ui/stats_bar.rs (1)

79-85: ⚠️ Potential issue | 🟡 Minor

Handle the zero-worker case explicitly.

When the gateway is connected but total == 0, this still renders green all healthy. That should be a neutral no workers/-- state instead.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/stats_bar.rs` around lines 79 - 85, The health_text branch logic
treats a connected gateway with total == 0 as "all healthy"; change health_text
(used where state.connected, unhealthy, total are referenced) so that when
state.connected is true and total == 0 it returns the neutral/no-workers variant
(e.g., "--" or "no workers" with theme::TEXT_MUTED) before checking unhealthy ==
0; reorder the conditions accordingly so the total==0 case is handled first
while preserving the existing GREEN for actual healthy workers and RED for
unhealthy cases.

tui/src/main.rs (2)

158-171: ⚠️ Potential issue | 🟠 Major

Guard terminal setup with RAII, not just the panic hook.

Any ? between enable_raw_mode() and the explicit cleanup path can return before the hook helps, leaving the shell in raw mode / alternate screen.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/main.rs` around lines 158 - 171, The terminal setup must be protected
by an RAII guard instead of relying only on the panic hook: create a small guard
type (e.g. TerminalGuard) whose constructor calls enable_raw_mode() and
EnterAlternateScreen and whose Drop impl calls LeaveAlternateScreen and
disable_raw_mode(), then instantiate this guard before creating the
CrosstermBackend/Terminal (symbols: enable_raw_mode, disable_raw_mode,
EnterAlternateScreen, LeaveAlternateScreen, CrosstermBackend::new,
Terminal::new) so any early-return or error will run Drop and restore the
terminal; keep or call std::panic::set_hook as before, but remove cleanup logic
from the hook since the guard handles restoration.

---

197-199: ⚠️ Potential issue | 🟠 Major

Parse the port from a URL, not by splitting on :.

rsplit(':') misparses values like http://localhost:31000/health as 31000/health, so auto-start falls back to the default port and may launch SMG on the wrong socket.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/main.rs` around lines 197 - 199, The current extract_port function
incorrectly slices on ':' and misparses paths like
"http://localhost:31000/health"; change extract_port to actually parse the URL
(use the url::Url parser) and return the port via Url::port() or
Url::port_or_known_default() to get the numeric port correctly; update
Cargo.toml to include the url crate if missing and replace the rsplit-based
logic in extract_port with a proper Url::parse(url) flow that returns the parsed
port as Option<u16>.

tui/src/ui/pulse.rs (2)

376-389: ⚠️ Potential issue | 🟠 Major

Use request-rate history in the compact throughput panel.

This panel reads throughput_history but labels it req/s. It also shows No data whenever tok/s history is empty, even if request-rate history exists.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/pulse.rs` around lines 376 - 389, The compact throughput panel is
wrongly using state.throughput_history (and showing "No data" when tok/s history
is empty) but should use the request-rate history; update the panel logic in
pulse.rs to check state.request_rate_history for emptiness, use
state.request_rate_history.back().copied().unwrap_or(0.0) for latest, and
replace any uses of state.throughput_history in this panel (rendering the
Paragraph and any sparkline) with state.request_rate_history so the label
"req/s" matches the actual data shown.

---

21-38: ⚠️ Potential issue | 🟠 Major

Keep Request Stats in the narrow layout.

The <80 branch returns after rendering worker health / node status / throughput, so latency, connections, and in-flight metrics disappear entirely on small terminals.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/pulse.rs` around lines 21 - 38, The narrow-layout branch for width
< 80 omits the request-stats panel (latency/connections/in-flight); update the
branch that builds constraints and renders rows so it includes a Constraint and
a call to the request-stats renderer (e.g., add Constraint::Fill(1) to the
constraints Vec and call render_request_stats(f, &state, rows[i]) in sequence
before returning), making sure to account for has_node_panel when computing the
row index similarly to render_worker_health, render_node_status, and
render_throughput_compact.

tui/src/ui/detail.rs (3)

32-34: 🧹 Nitpick | 🔵 Trivial

Use INVARIANT: for this safe-code assumption.

This comment documents a lock-poisoning assumption, not an unsafe block.

Based on learnings: "In Rust code across the repository, use the marker INVARIANT: to document assumptions in safe code. Reserve SAFETY: for explaining why unsafe blocks are sound."

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/detail.rs` around lines 32 - 34, Replace the "Safety:" note above
the unwrap with the repository's invariant marker: change the comment before the
call to app.state.read().unwrap() to start with "INVARIANT:" (e.g., "INVARIANT:
RwLock is not poisoned — no panics while holding the lock") so the assumption is
documented as a safe-code invariant rather than a SAFETY explanation; leave the
#[expect(clippy::unwrap_used)] and the unwrap call unchanged.

---

225-230: ⚠️ Potential issue | 🔴 Critical

Make truncate_str UTF-8 safe.

&s[..max.saturating_sub(1)] panics when max lands inside a multibyte character, which can crash the detail panel on non-ASCII worker IDs.

Proposed fix

 fn truncate_str(s: &str, max: usize) -> String {
-    if s.len() <= max {
+    if max == 0 {
+        String::new()
+    } else if s.chars().count() <= max {
         s.to_string()
     } else {
-        format!("{}…", &s[..max.saturating_sub(1)])
+        let prefix: String = s.chars().take(max.saturating_sub(1)).collect();
+        format!("{prefix}…")
     }
 }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/detail.rs` around lines 225 - 230, truncate_str currently slices
bytes which can split UTF-8 multibyte characters; update truncate_str to operate
on char boundaries: check if s.chars().count() <= max then return s.to_string(),
otherwise build the prefix with
s.chars().take(max.saturating_sub(1)).collect::<String>() and append the
ellipsis (e.g., prefix + "…"); handle the max == 0 case by returning "…" (or an
empty string plus ellipsis) so no byte-slice is ever used and multibyte
characters are preserved.

---

130-143: ⚠️ Potential issue | 🟠 Major

Don't proxy circuit-breaker state through worker.is_healthy.

This renders renamed health status, not breaker status. A healthy worker with an open breaker will show as closed, and an unhealthy worker will show as open. Use the real breaker signal here, or render unknown until that data is available.

Based on learnings: "healthy_only = true intentionally separates circuit-breaker-open workers from genuinely unhealthy workers; the 503 path is specifically for healthy workers whose circuit breaker is open."

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/detail.rs` around lines 130 - 143, The UI is incorrectly using
worker.is_healthy to represent circuit-breaker state (cb_label/cb_color and the
"Circuit: " span), causing healthy-but-open breakers to display as "closed";
update this block to read the actual breaker signal (e.g., a field like
worker.circuit_open, worker.breaker_state, or similar) when available and map
that to labels/colors, and if no breaker state is present render "unknown"
instead; also keep the existing health-only semantics (healthy_only) intact so
the 503 path still applies for healthy workers with an open breaker.

tui/src/ui/action_menu.rs (1)

145-167: ⚠️ Potential issue | 🟠 Major

Remove the per-frame Box::leak allocations in the model picker.

This branch runs on every render while SelectModel is open, so the leaked numbering strings grow the heap until the process exits. Keep the indices owned and render from String/Cow instead.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/action_menu.rs` around lines 145 - 167, The code leaks heap
strings via Box::leak in AddMenuState::SelectModel; replace those leaks by
keeping owned Strings (or Cow) for the index labels so they live for the
duration of the render and can be borrowed when building refs. Concretely,
change items to Vec<(String, String, String)> (build index labels with
format!("{}", i+1) and the custom label with format!("{}", presets.len()+1)),
push those Strings into items, then create refs by borrowing with .as_str()
(e.g. .map(|(n,l,d)| (n.as_str(), l.as_str(), d.as_str())) ) before calling
render_menu; this removes Box::leak while keeping the same render_menu call
pattern.

tui/src/app.rs (5)

633-635: ⚠️ Potential issue | 🟠 Major

Pressing q quits even while typing in the chat input.

In handle_chat_key, pressing q when !self.chat_streaming always sets should_quit = true. Unlike other view-switching keys (lines 647-659) which check self.chat_input.is_empty(), this prevents typing the letter 'q' in chat messages.

Proposed fix

-            KeyCode::Char('q') if !self.chat_streaming => {
+            KeyCode::Char('q') if !self.chat_streaming && self.chat_input.is_empty() => {
                 self.should_quit = true;
             }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/app.rs` around lines 633 - 635, In handle_chat_key, the
KeyCode::Char('q') branch sets self.should_quit = true unconditionally when
!self.chat_streaming, preventing typing 'q' into the chat; change the condition
to mirror the other view-switching keys by requiring both !self.chat_streaming
and self.chat_input.is_empty() before setting self.should_quit, so that 'q' only
quits when the chat input is empty and not streaming.

---

1281-1288: ⚠️ Potential issue | 🟠 Major

Roll back spawned worker when gateway registration fails.

When add_worker() fails at line 1273, the child process is already in worker_children (line 1253) and GPUs are claimed (line 1262). The process continues running and claims are never released.

Proposed fix: Clean up on registration failure

                     Err(e) => {
                         self.add_log(
                             LogLevel::Error,
                             &format!("Failed to register worker {url}: {e}"),
                         );
+                        // Roll back: release GPU claim and kill the spawned process
+                        self.claimed_gpus.remove(&url);
+                        if let Some(pos) = self.worker_children.iter().position(|(d, _)| d == &desc) {
+                            let (_, mut child) = self.worker_children.remove(pos);
+                            let _ = child.start_kill();
+                        }
                         self.set_status(format!("Started {desc} but registration failed: {e}"));
                     }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/app.rs` around lines 1281 - 1288, On registration failure in the
Err(e) branch after calling add_worker(), ensure you roll back the spawned
worker: remove its entry from worker_children, terminate/kill the child process
(or send shutdown) and release any claimed GPUs (the same logic used when
stopping workers), then log and set status as before; implement this cleanup in
the Err(e) block that currently calls add_log and set_status so the child
process doesn't keep running and GPUs remain freed.

---

758-774: ⚠️ Potential issue | 🟠 Major

External worker model filtering excludes valid provider models.

The gpt-5.4 prefix check drops models from Anthropic, xAI, Gemini, and most OpenAI models (e.g., gpt-4o, claude-3, gemini-1.5-pro), making them unselectable in the chat tab.

Consider using the models actually reported by each worker, and only apply a provider-specific default for true wildcard workers (empty model list).

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/app.rs` around lines 758 - 774, The current loop over workers
(workers.workers) treats any external worker as requiring gpt-5.4-prefixed
models by filtering with m.id.starts_with("gpt-5.4"), which drops valid provider
model ids; change the logic so that if a worker has an empty models list
(w.models.is_empty()) you add the provider-default placeholder "gpt-5.4-nano"
once, but otherwise accept and push every reported model id (m.id) for that
worker without applying the starts_with filter; specifically remove the branch
that does if is_external && !m.id.starts_with("gpt-5.4") { continue } and keep
the existing duplicate-check on models.contains before pushing m.id, and ensure
the placeholder insertion still guards against duplicates.

---

534-556: ⚠️ Potential issue | 🟠 Major

toggle-health command only disables health checks, never re-enables.

Both the :toggle-health command here and the ToggleHealthCheck menu action at lines 904-930 always send disable_health_check: Some(true). This is a one-way action that cannot re-enable health checks.

Either derive the next state from the worker's current disable_health_check value, or rename to :disable-health / "Disable health check" to clarify the one-way behavior.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/app.rs` around lines 534 - 556, The toggle-health handler (and the
ToggleHealthCheck menu action) always sends disable_health_check: Some(true),
making it one-way; change the logic to read the worker's current
disable_health_check state (e.g., fetch the worker via
self.client.get_worker(&id).await or from the in-memory worker record) and send
disable_health_check: Some(!current_value) when building
openai_protocol::worker::WorkerUpdateRequest so the update toggles between
enabled/disabled; update both the "toggle-health" match arm and the
ToggleHealthCheck action to use the same toggle-by-current-state approach and
preserve other fields as before.

---

1156-1168: ⚠️ Potential issue | 🟡 Minor

TOCTOU race on ephemeral port allocation.

The TcpListener binds to get a free port, then immediately drops. Between dropping and the worker process binding, another process could claim that port.

While unlikely in practice, consider either:

1. Passing port 0 directly to the worker runtime if it supports reporting the actual bound port
2. Implementing retry logic if the worker fails to bind

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/app.rs` around lines 1156 - 1168, The current ephemeral-port
allocation uses std::net::TcpListener to pick a free port then immediately drops
it (the match that assigns port), creating a TOCTOU race; instead either (A)
stop pre-binding and pass port 0 directly to the worker runtime so the worker
itself binds and reports the actual bound port, or (B) add robust retry logic
around worker bind attempts: if you must keep the existing TcpListener pattern
(the code that assigns port and calls self.set_status on error), modify the
worker spawn/bind path to accept port 0 or detect binding failure and retry N
times with a small backoff before reporting failure via self.set_status;
reference the current port variable and the TcpListener bind block when
implementing this change so the worker binding and reporting are atomic and
race-free.

tui/src/state.rs (2)

450-466: ⚠️ Potential issue | 🟡 Minor

Potential negative latency on Prometheus counter reset.

Line 453 uses plain subtraction (cur_sum - prev_sum) which can yield a negative value if the Prometheus server restarts and counters reset to zero. This pushes negative latency values to avg_latency_history.

Proposed fix: Clamp delta_sum to non-negative

         let (cur_sum, cur_count) = parse_duration_stats(&metrics_text);
         if let (Some(prev_sum), Some(prev_count)) = (s.prev_duration_sum, s.prev_duration_count) {
-            let delta_sum = cur_sum - prev_sum;
+            let delta_sum = if cur_sum >= prev_sum { cur_sum - prev_sum } else { 0.0 };
             let delta_count = cur_count.saturating_sub(prev_count);

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/state.rs` around lines 450 - 466, The subtraction cur_sum - prev_sum
in the avg latency computation can be negative after a Prometheus counter reset;
in parse_duration_stats usage where you compute delta_sum and delta_count (using
s.prev_duration_sum and s.prev_duration_count) clamp delta_sum to non-negative
before computing avg_latency (e.g., replace raw subtraction with a non-negative
max) so you never push negative values into s.avg_latency_history (respect
existing delta_count handling and SPARKLINE_CAP).

---

395-427: ⚠️ Potential issue | 🔴 Critical

throughput_history receives duplicate entries when both conditions are met.

When worker metrics are available (has_worker_metrics is true) AND Prometheus metrics fetch succeeds, throughput_history gets pushed twice per poll cycle:

1. Line 398: pushes total_throughput (from loads API)
2. Line 427: pushes rps (from Prometheus counter)

This corrupts the sparkline data and causes the rolling history to advance twice as fast as intended.

Proposed fix: Use req/s as sole source when available

     if has_worker_metrics {
         // ... per-worker metrics processing ...

-        if s.throughput_history.len() >= SPARKLINE_CAP {
-            s.throughput_history.pop_front();
-        }
-        s.throughput_history.push_back(total_throughput);
-
         let avg_cache = if worker_count > 0 {

This keeps the Prometheus-based rps as the primary throughput source (lines 424-427), which works for all worker types including external providers.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/state.rs` around lines 395 - 427, The throughput_history is being
pushed twice when both worker metrics and Prometheus metrics are present; modify
the update logic so that when Prometheus metrics fetch (metrics) is Ok and
parse_request_count yields an rps, you treat rps as the sole throughput source
and do not push total_throughput into s.throughput_history. Concretely, in the
block that currently pushes total_throughput (using total_throughput and
has_worker_metrics), guard that push so it only runs when metrics is
Err/unavailable (or when prev_request_count yields None), and keep the existing
push of rps (from parse_request_count / current_count / delta) as the primary
update for s.throughput_history and s.requests_per_sec_history.

tui/src/event.rs (1)

31-32: 🧹 Nitpick | 🔵 Trivial

Use INVARIANT: instead of Safety: for non-unsafe code.

The comment on Line 31 uses "Safety:" but this isn't an unsafe block. Per repository conventions, use INVARIANT: to document assumptions in safe code.

📝 Proposed fix

-        // Safety: fire-and-forget event reader loop that runs for the app's lifetime
+        // INVARIANT: fire-and-forget event reader loop that runs for the app's lifetime

Based on learnings: "In Rust code across the repository, use the marker INVARIANT: to document assumptions in safe code. Reserve SAFETY: for explaining why unsafe blocks are sound."

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/event.rs` around lines 31 - 32, The comment above the event reader
loop currently uses "Safety:" but this is safe code; update the doc comment to
use "INVARIANT:" instead to follow repository conventions—locate the comment
immediately preceding the #[expect(clippy::disallowed_methods)] attribute and
the fire-and-forget event reader loop and replace "Safety:" with "INVARIANT:" so
the assumption is documented correctly for the safe code path.

tui/src/ui/workers.rs (1)

345-356: ⚠️ Potential issue | 🟡 Minor

Plain http:// workers don't fall back to Prometheus RPS.

Lines 346-354 provide worker_rps fallback for grpc:// and https:// workers when /get_loads data is unavailable, but plain http:// workers fall through to line 355 returning ("0", "0.0%"). If local sglang/vllm workers use http:// URLs, they'd show zero load when /get_loads is temporarily unavailable instead of the Prometheus-derived request rate.

🩹 Proposed fix

     // External workers
     if worker_url.starts_with("https://") {
         let rps = worker_rps.get(worker_url).copied().unwrap_or(0.0);
         return (format!("{rps:.1} r/s"), "N/A".to_string());
     }
-    ("0".to_string(), "0.0%".to_string())
+    // Fallback for http:// and other schemes: use Prometheus RPS if available
+    if worker_url.starts_with("http://") {
+        let rps = worker_rps.get(worker_url).copied().unwrap_or(0.0);
+        return (format!("{rps:.1} r/s"), "N/A".to_string());
+    }
+    ("--".to_string(), "--".to_string())
 }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/workers.rs` around lines 345 - 356, The code only checks
worker_url prefixes "grpc://" and "https://" for Prometheus RPS fallback,
causing plain "http://" workers to return ("0","0.0%"); update the logic that
builds the per-worker load tuple (the block using worker_url and worker_rps) to
also handle "http://" (either add an if branch for
worker_url.starts_with("http://") mirroring the grpc/https branches or collapse
into a single branch that checks any scheme and uses
worker_rps.get(worker_url).copied().unwrap_or(0.0) to format "{rps:.1} r/s" and
"N/A"), referencing the existing worker_url and worker_rps variables to locate
and change the code.

tui/src/main.rs (2)

108-116: ⚠️ Potential issue | 🟡 Minor

Readiness timeout is 30s but documentation mentions 120s.

The PR objectives/README describe readiness polling for up to 120s, but this code times out after 30s. For slow local model loading, 30s may be insufficient.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/main.rs` around lines 108 - 116, The readiness timeout is set to 30s
but the docs state 120s; update the timeout in the loop where deadline is
computed (the tokio::time::Instant::now() + tokio::time::Duration::from_secs(30)
assignment that defines deadline) to 120 seconds (or replace the literal with a
named constant like READYNESS_TIMEOUT_SECS used by the readiness polling logic)
so the loop waits up to 120s before warning and breaking.

---

208-211: ⚠️ Potential issue | 🟠 Major

extract_port() misparses URLs that include a path.

For inputs like http://localhost:31000/health, rsplit(':') yields 31000/health, so the parse fails and auto-start falls back to the default port. Consider proper URL parsing.

Proposed fix

 /// Extract port from a URL like "http://localhost:30000".
 fn extract_port(url: &str) -> Option<u16> {
-    url.rsplit(':').next()?.trim_end_matches('/').parse().ok()
+    // Strip scheme, then extract host:port portion before any path
+    let without_scheme = url
+        .trim_start_matches("http://")
+        .trim_start_matches("https://");
+    let host_port = without_scheme.split('/').next()?;
+    host_port.rsplit(':').next()?.parse().ok()
 }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/main.rs` around lines 208 - 211, The current extract_port() uses
rsplit(':') and fails on URLs with paths (e.g. "http://host:31000/health");
replace that ad-hoc parsing with a proper URL parse: call url::Url::parse(url)
(or prepend "http://" if scheme may be missing), then return the port via
url.port().map(|p| p) or url.port_or_known_default() wrapped as Option<u16>, and
handle parse errors by returning None; update the extract_port function to use
url::Url parsing and error-safe extraction instead of rsplit.

tui/src/ui/detail.rs (1)

32-34: 🧹 Nitpick | 🔵 Trivial

Use INVARIANT: instead of Safety: for non-unsafe code.

Line 32 uses "Safety:" but this is a safe RwLock::read().unwrap() call, not an unsafe block. Per repository conventions, use INVARIANT: for documenting assumptions in safe code.

Proposed fix

-    // Safety: RwLock is not poisoned — no panics while holding the lock
+    // INVARIANT: RwLock is not poisoned — no panics while holding the lock

Based on learnings: "In Rust code across the repository, use the marker INVARIANT: to document assumptions in safe code. Reserve SAFETY: for explaining why unsafe blocks are sound."

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/detail.rs` around lines 32 - 34, The comment above the RwLock read
should use the repository convention INVARIANT: instead of Safety: because this
is documenting an assumption in safe code; update the doc comment that precedes
#[expect(clippy::unwrap_used)] and the line let state =
app.state.read().unwrap() to start with "INVARIANT:" (e.g., "INVARIANT: RwLock
is not poisoned — no panics while holding the lock") so it matches the project's
guidance for non-unsafe code.

tui/src/app.rs (1)

451-466: ⚠️ Potential issue | 🟠 Major

:delete <id> uses wrong worker URL for cleanup and doesn't kill backend.

The command deletes the worker by the provided ID argument, but then calls selected_worker_url() which returns the currently selected worker's URL—not the worker being deleted. This causes:

1. GPU claims for the wrong worker get released
2. The deleted worker's backend process is never killed
3. The deleted worker's GPU claims are never released

The interactive delete (lines 829-882) correctly uses the confirmed worker's URL and kills the backend. This command should do the same.

Proposed fix: Look up worker URL by ID before deletion

 Some("delete") => {
     if let Some(id) = parts.get(1) {
         let id = id.trim().to_string();
+        // Look up worker URL before deletion
+        let worker_url = {
+            #[expect(clippy::unwrap_used)]
+            let state = self.state.read().unwrap();
+            state.workers.as_ref()
+                .and_then(|wl| wl.workers.iter().find(|w| w.id == id))
+                .map(|w| w.url.clone())
+        };
         match self.client.delete_worker(&id).await {
             Ok(_) => {
-                // Also clean up spawned process and GPU claims (like interactive delete)
-                let worker_url = self.selected_worker_url().unwrap_or_default();
-                self.claimed_gpus.remove(&worker_url);
+                if let Some(url) = worker_url {
+                    // Release claimed GPUs
+                    if self.claimed_gpus.remove(&url).is_some() {
+                        self.add_log(LogLevel::Info, &format!("Released GPU claim for {url}"));
+                    }
+                    // Kill backend process if spawned by TUI
+                    if let Some(port) = url.rsplit(':').next() {
+                        let port = port.trim_matches('/').to_string();
+                        let match_str = format!("port {port}");
+                        if let Some(pos) = self.worker_children.iter().position(|(d, _)| d.contains(&match_str)) {
+                            let (desc, mut child) = self.worker_children.remove(pos);
+                            let _ = child.kill().await;
+                            self.add_log(LogLevel::Info, &format!("Killed backend: {desc}"));
+                        }
+                    }
+                }
                 self.set_status(format!("Worker {id} deleted"));
             }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/app.rs` around lines 451 - 466, When handling the "delete" command,
don't call selected_worker_url(); instead look up the worker's URL by the
provided id (the same lookup used in the interactive delete flow), store it in a
local worker_url before calling self.client.delete_worker(&id).await, then after
a successful delete call the same backend-kill routine used by the interactive
delete to terminate the worker process and remove GPU claims from
self.claimed_gpus for that worker_url, and finally call self.set_status with the
id; mirror the interactive delete's order and method calls so the deleted
worker's process is killed and its GPU claims are released rather than touching
the currently-selected worker.

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

tui/src/ui/pulse.rs (2)

379-391: ⚠️ Potential issue | 🟠 Major

Read request-rate history in the compact throughput view.

Lines 379-387 still pull from throughput_history while the label says req/s, and Lines 379-384 report “No data” even when requests_per_sec_history has samples. Narrow and 80–99 column layouts will show the wrong metric.

Suggested fix

-    if state.throughput_history.is_empty() {
+    if state.requests_per_sec_history.is_empty() {
         f.render_widget(
             Paragraph::new(Line::styled("No data", theme::label())),
             inner,
         );
         return;
     }
 
-    let latest = state.throughput_history.back().copied().unwrap_or(0.0);
+    let latest = state.requests_per_sec_history.back().copied().unwrap_or(0.0);
     f.render_widget(
         Paragraph::new(Line::from(vec![
             Span::styled("Latest: ", theme::label()),
             Span::styled(format!("{latest:.1} req/s"), theme::text().fg(theme::GREEN)),
         ])),

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/pulse.rs` around lines 379 - 391, The compact throughput view is
reading from state.throughput_history but should use
state.requests_per_sec_history; update the empty-check and the latest-value
extraction in the block that renders the "Latest: ... req/s" paragraph to use
requests_per_sec_history (replace uses of throughput_history.back()/is_empty()
with requests_per_sec_history.back()/is_empty()), so the label and displayed
metric match the actual request-rate history shown by the compact view.

---

248-250: ⚠️ Potential issue | 🟡 Minor

Avoid byte slicing in shorten_gpu_name().

Line 250 slices a UTF-8 string by byte index, so a non-ASCII GPU name can panic the render path. This is low-probability with current NVIDIA names, but it is still a runtime panic in a hot UI path.

Suggested fix

     // Truncate if too long
-    if name.len() > 12 {
-        name[..12].to_string()
+    if name.chars().count() > 12 {
+        name.chars().take(12).collect()
     } else {
         name.to_string()
     }
 }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/pulse.rs` around lines 248 - 250, The function shorten_gpu_name()
currently truncates the input string by byte slicing (name[..12].to_string()),
which can panic on UTF-8 multi-byte characters; replace that byte-slice logic
with a UTF-8 safe truncation: iterate over name.chars() and take the first N
characters (or use the unicode-segmentation crate and take grapheme clusters if
you need to preserve visible characters) and collect into a String so the
function returns a safely truncated GPU name without panicking.

tui/src/ui/workers.rs (1)

345-355: ⚠️ Potential issue | 🟠 Major

Use the existing Prometheus fallback for plain http:// workers too.

If /get_loads is missing, Line 355 falls back to hard-coded zeros for plain http:// URLs instead of the worker_rps map already passed in. That makes locally spawned HTTP workers look idle whenever the load endpoint is unavailable.

Suggested fix

-    // gRPC/local workers: show req/s from Prometheus per-worker counts
-    if worker_url.starts_with("grpc://") {
-        let rps = worker_rps.get(worker_url).copied().unwrap_or(0.0);
-        return (format!("{rps:.1} r/s"), "N/A".to_string());
-    }
-    // External workers
-    if worker_url.starts_with("https://") {
+    // Fallback: show req/s from Prometheus when /get_loads is unavailable
+    if worker_url.starts_with("grpc://")
+        || worker_url.starts_with("http://")
+        || worker_url.starts_with("https://")
+    {
         let rps = worker_rps.get(worker_url).copied().unwrap_or(0.0);
         return (format!("{rps:.1} r/s"), "N/A".to_string());
     }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/workers.rs` around lines 345 - 355, The code currently returns
hard-coded zeros for plain http:// workers; update the branch handling so that
URLs starting with "http://" use the same Prometheus fallback as the grpc and
https branches: read rps from the worker_rps map
(worker_rps.get(worker_url).copied().unwrap_or(0.0)), format it as "{rps:.1}
r/s" and return "N/A" for the second value, replacing the final ("0","0.0%")
result for http:// cases; locate the block using the variables worker_url and
worker_rps in workers.rs and add a starts_with("http://") branch or broaden the
existing condition accordingly.

tui/src/main.rs (1)

208-210: ⚠️ Potential issue | 🟠 Major

Parse the port from the URL instead of splitting on :.

Line 210 misreads URLs with paths like http://localhost:31000/health, so auto-start falls back to 30000/29000 and can launch on the wrong socket.

Suggested fix

 /// Extract port from a URL like "http://localhost:30000".
 fn extract_port(url: &str) -> Option<u16> {
-    url.rsplit(':').next()?.trim_end_matches('/').parse().ok()
+    reqwest::Url::parse(url).ok()?.port()
 }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/main.rs` around lines 208 - 210, The extract_port function
incorrectly splits on ':' and mis-parses URLs with paths (e.g.,
"http://localhost:31000/health"); update extract_port to parse the input as a
URL and return the explicit port component instead of string-splitting: call
Url::parse(url) (from the url crate) and use Url::port() (or
port_or_known_default() if you want defaults) to extract the u16 port, handling
parse errors by returning None; update the function signature/existing callers
in extract_port to reflect this change.

tui/src/ui/logs.rs (1)

167-178: ⚠️ Potential issue | 🟠 Major

Make tail reads UTF-8-safe.

Line 172 can seek into the middle of a multibyte character. When that happens, Line 175 clears the whole buffer on decode failure, so the Logs tab goes blank; even successful mid-file reads can start with a partial first line.

Suggested fix

         Ok(mut file) => {
             // Read at most the last 64KB to avoid blocking on large files
             const TAIL_BYTES: u64 = 64 * 1024;
             let len = file.metadata().map(|m| m.len()).unwrap_or(0);
+            let did_seek = len > TAIL_BYTES;
             if len > TAIL_BYTES {
                 let _ = file.seek(SeekFrom::Start(len - TAIL_BYTES));
             }
-            let mut buf = String::new();
-            if file.read_to_string(&mut buf).is_err() {
+            let mut buf = Vec::new();
+            if file.read_to_end(&mut buf).is_err() {
                 buf.clear();
             }
-            buf
+            let text = String::from_utf8_lossy(&buf).into_owned();
+            if did_seek {
+                text.split_once('\n')
+                    .map(|(_, rest)| rest.to_string())
+                    .unwrap_or_default()
+            } else {
+                text
+            }
         }

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/ui/logs.rs` around lines 167 - 178, The tail read can seek into the
middle of a UTF-8 multibyte sequence and then drop the entire buffer on decode
failure; fix by reading raw bytes instead of directly into a String and then
decode safely: change the logic around file.read_to_string to read_to_end into a
Vec<u8> (keep TAIL_BYTES and the seek logic), then convert that byte buffer to a
String using String::from_utf8_lossy or std::str::from_utf8 with a fallback so
partial leading bytes don't cause a full clear—reference the
variables/operations file, TAIL_BYTES, the seek(SeekFrom::Start(...)) call, and
the read_to_* call when making the change.

tui/src/app.rs (3)

451-460: ⚠️ Potential issue | 🟠 Major

Make :delete reuse the same cleanup path as the confirm dialog.

This branch still only deletes the gateway record and drops claimed_gpus for the currently selected row. :delete <other-id> can therefore release the wrong claim, and locally spawned backends in worker_children keep running. Route the command through the same helper used by handle_delete_confirm(), or resolve the worker URL/process by the provided id before cleaning up.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/app.rs` around lines 451 - 460, The current ":delete" branch calls
self.client.delete_worker(&id) and only removes claimed_gpus for the currently
selected row, which can release the wrong GPU and leave worker_children running;
fix by reusing the same cleanup path as handle_delete_confirm(): after
successful delete_worker(&id).await, resolve the worker URL and any spawned
child process corresponding to that id (use the same lookup logic used in
handle_delete_confirm() to map id → worker_url and id → worker_children entry),
remove the correct entry from claimed_gpus and stop/cleanup the matching
worker_children, and call set_status with the id; alternatively, invoke the same
helper method that handle_delete_confirm() uses to perform the cleanup instead
of directly mutating claimed_gpus/worker_children.

---

403-408: ⚠️ Potential issue | 🟠 Major

Use one shared filtered-worker view for selection and actions.

selected_worker(), start_delete(), and clamp_selection() still disagree about what "visible workers" means: one matches runtime_type, one only matches id/url, and one ignores the filter entirely. Under an active filter this can leave selected_index out of range or make d resolve a different/no worker than the other actions. Extract one helper for the filtered list and reuse it everywhere, then re-clamp immediately after updating active_filter.

Also applies to: 807-825, 1126-1145, 1360-1368

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/app.rs` around lines 403 - 408, The codebase has inconsistent
definitions of "visible workers" across selected_worker(), start_delete(), and
clamp_selection(), causing out-of-range or wrong selections when active_filter
changes; extract a single helper (e.g., a method like filtered_workers() or
get_visible_workers()) that returns the list of workers filtered by the same
criteria (use runtime_type + id/url + active_filter logic you want) and replace
all ad-hoc filtering in selected_worker(), start_delete(), clamp_selection(),
and the other occurrences (around the noted ranges) to use that helper; after
updating active_filter (when you set self.active_filter based on
self.input_buffer and change self.input_mode) call clamp_selection() immediately
to re-clamp selected_index against the unified filtered list so selection
remains consistent.

---

540-559: ⚠️ Potential issue | 🟠 Major

Toggle health checks from the config flag, not is_healthy.

An actually unhealthy worker with health checks still enabled takes the disable = false branch here, so the "toggle" becomes a no-op and the TUI can never disable checks on that worker. Derive the next value from the worker's current disable_health_check setting instead of inferring it from liveness.

Also applies to: 918-944

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@tui/src/app.rs` around lines 540 - 559, The toggle currently uses
worker.is_healthy; instead derive the next disable value from the worker's
current health.disable_health_check flag. Retrieve current_disabled via
worker.health.as_ref().and_then(|h| h.disable_health_check).unwrap_or(false) and
set disable = !current_disabled, then build the
openai_protocol::worker::WorkerUpdateRequest::health with that disable; apply
the same change to the other occurrence around the WorkerUpdateRequest
construction (the similar block mentioned at lines 918-944).

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".