perf(tui): stabilize long-session scrolling

[OutThisLife]

Summary

This PR makes the TUI usable on very long sessions by cutting hot render work out of the scroll path, isolating streaming state, and adding bounded caches/eviction for Ink internals.

Main outcomes:

• Virtualized transcript rendering now caps mount work during fast wheel/PageUp bursts, preserves coverage for unmeasured rows, and avoids full-range recomputation on every scroll tick.
• Markdown, width, wrap, and ANSI-slice work is cached or bounded so cold-mounting old transcript rows no longer reparses/scans entire historical messages.
• Composer typing uses safe direct terminal echo for the hot path, so keystrokes are not paced by React/Ink commits.
• Streaming output backs off while the user types or scrolls, then relaxes when idle.
• Turn/UI/overlay state is split into narrow stores/selectors so model deltas do not invalidate the whole app shell.
• Todo/progress rendering is folded into the transcript flow, with live todos anchored under the latest user message.
• Ink cache eviction is now explicit under memory pressure and session reset.
• Added profiling tools and gated diagnostics for future regressions (HERMES_DEV_PERF=1, HERMES_TUI_FPS=1).
• Follow-up cleanup passes removed noisy scaffolding/comments, stale debug exports, and test-only dead code without changing behavior.

Before / After

CPU profile from a real long-session scroll:

Area	Before	After
Output.get() self-time	24%	0.3%
sliceAnsi total	18%	not in top 25
stringWidth family	14%	~3%
Process idle during scroll profile	60.7%	77.3%

Synthetic PageUp profile harness:

Metric	Before	After
frame duration p95	~10ms	4.87ms
frame duration p99	25ms+	12.80ms
Yoga/layout p99	~20ms	1.87ms

Idle sanity / typing-while-streaming profiles after fixes:

• 2 minute idle CPU profile: 99.37% idle
• Fresh production typing+streaming CPU profile: 96.56% idle over 42.4s
• GC during production typing+streaming profile: 0.20% self-time
• Streaming markdown during production typing+streaming profile: effectively noise-level (Streaming* ~0.05% inclusive, markdown ~0.00-0.01%)
• Text input during production typing+streaming profile: 0.22% inclusive
• No observed invisible render loop / timer tax at rest

Key Changes

• useVirtualHistory now uses deferred range growth, slide caps, quantized scroll snapshots, clamp bounds, pessimistic coverage for unmeasured rows, and typed-array offset reuse.
• ScrollBox/Ink rendering gained a scroll fast path plus instrumentation to explain declines.
• stringWidth, wrapText, sliceAnsi, and line-width caches are bounded LRU caches, with shared eviction via evictInkCaches().
• Output.get() skips ANSI slicing entirely when the line already fits the clip window.
• Historical transcript rows use bounded render text outside the active reading tail.
• Streaming markdown reparses only the unstable suffix after the last stable block boundary.
• Composer input uses optimistic echo, cached line width, direct EOL backspace, coalesced parent changes, and stable composer columns.
• Turn state is split from UI/overlay state, with selector-based subscriptions for streaming, tools, todos, subagents, and activity.
• React Compiler is wired into the TUI build as a post-tsc Babel pass, with compiler lint warnings enabled for app code.
• /details config/completion, /model persistence, resume/exit session handoff, and most-recent session selection were tightened while working through long-session flows.

Validation

Latest local validation after cleanup:

• npm run fix passed
• npm run type-check passed
• npm test passed: 367/367
• npm run build passed
• python -m py_compile scripts/profile-tui.py passed

npm run fix currently reports 4 React Compiler warnings in existing singleton/hot-path mutation patterns; no errors.

Notes For Reviewers

The perf diagnostics are opt-in and should be zero-cost when disabled:

• HERMES_DEV_PERF=1 writes commit/frame rows to the perf log.
• HERMES_TUI_FPS=1 shows the live FPS overlay.
• Cache eviction is exposed through @hermes/ink so the TUI can prune hot caches on memory pressure or session reset.

[Copilot]

Pull request overview

This PR improves long-session UX in the TUI by stabilizing transcript scrolling behavior under burst scroll, reducing composer rewrap jitter, centralizing viewport/input metrics helpers with tests, persisting /model selections across restarts, and adding /details slash completion support in the gateway.

Changes:

• Add ScrollBox clamp bounds support and hook it into virtual history to prevent scroll bursts from outrunning mounted rows.
• Centralize viewport snapshot + input layout metrics utilities, refactor consumers, and add unit tests.
• Persist /model switches by default (via --global) and add /details completions in complete.slash (plus tests).

Reviewed changes

Copilot reviewed 13 out of 14 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
ui-tui/src/types/hermes-ink.d.ts	Extends ScrollBoxHandle typing with setClampBounds.
ui-tui/src/lib/viewportStore.ts	Adds shared viewport snapshot + useViewportSnapshot hook for consistent scroll-derived UI.
ui-tui/src/lib/inputMetrics.ts	Adds shared cursor wrap parity + composer sizing helpers.
ui-tui/src/hooks/useVirtualHistory.ts	Sets ScrollBox clamp bounds based on mounted virtual range to stabilize burst scrolling.
ui-tui/src/components/textInput.tsx	Refactors to import shared cursorLayout helper.
ui-tui/src/components/appLayout.tsx	Uses shared input metrics to reserve stable composer width/height.
ui-tui/src/components/appChrome.tsx	Switches sticky prompt + scrollbar math to useViewportSnapshot.
ui-tui/src/app/useMainApp.ts	Uses viewport snapshot helper; makes model picker selection persist via --global.
ui-tui/src/app/slash/commands/session.ts	Appends --global to /model by default (without duplicating it).
ui-tui/src/tests/viewportStore.test.ts	Adds tests for viewport snapshot normalization/keying.
ui-tui/src/tests/textInputWrap.test.ts	Moves cursor layout tests to new helpers; adds input metrics tests.
ui-tui/src/tests/createSlashHandler.test.ts	Adds tests asserting /model persistence behavior.
tui_gateway/server.py	Adds /details to slash completions and implements /details argument completions.
tests/test_tui_gateway_server.py	Adds gateway completion tests for /details.

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[Copilot]

Pull request overview

This PR aims to improve TUI “long session” interaction smoothness by stabilizing scrolling/virtualization bounds, reducing composer reflow/jitter during input, and throttling streaming UI updates based on user interaction state. It also extends slash completion and persists /model selections by default.

Changes:

• Add viewport/input-metric helpers and refactor scroll/viewport consumers to use them (with new tests).
• Improve virtual transcript burst-scroll stability via ScrollBox clamp bounds and selection-aware scrolling helper.
• Reduce composer/render churn while typing via coalesced parent updates, optional fast terminal echo, and interaction-mode-based streaming throttling; plus /details completion + default global /model.

Reviewed changes

Copilot reviewed 25 out of 26 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
ui-tui/src/types/hermes-ink.d.ts	Extends ScrollBoxHandle typing with clamp bounds setter.
ui-tui/src/lib/viewportStore.ts	Adds shared viewport snapshot + hook for scroll-driven UI.
ui-tui/src/lib/inputMetrics.ts	Centralizes cursor wrap parity + composer width/height helpers.
ui-tui/src/hooks/useVirtualHistory.ts	Adds virtual clamp logic to prevent burst scrolling past mounted rows.
ui-tui/src/config/timing.ts	Introduces interaction-aware streaming/idle timing constants.
ui-tui/src/config/limits.ts	Adjusts wheel scroll step size.
ui-tui/src/components/textInput.tsx	Adds fast-echo/coalesced updates and native-cursor behavior.
ui-tui/src/components/appLayout.tsx	Reserves stable composer width and sets height from visual wrap.
ui-tui/src/components/appChrome.tsx	Refactors sticky prompt + scrollbar to use viewport snapshot hook.
ui-tui/src/app/useSubmission.ts	Marks typing, boosts streaming throttle during busy, queues “session busy” submissions.
ui-tui/src/app/useMainApp.ts	Uses shared viewport snapshot; factors scroll-with-selection into helper; persists model picks globally.
ui-tui/src/app/turnController.ts	Adds interaction-mode-based streaming batching and adjustable delay.
ui-tui/src/app/slash/commands/session.ts	Makes /model persist globally by default (avoids dup --global).
ui-tui/src/app/scroll.ts	New helper for clamped scrolling that preserves selection snapshots.
ui-tui/src/app/interfaces.ts	Expands SelectionApi surface needed by scroll helper.
ui-tui/src/app/interactionMode.ts	Adds global interaction mode tracking (typing/scrolling/idle).
ui-tui/src/tests/virtualHistoryClamp.test.ts	Tests clamp enable/disable conditions.
ui-tui/src/tests/viewportStore.test.ts	Tests viewport snapshot math and keying.
ui-tui/src/tests/textInputWrap.test.ts	Moves cursorLayout tests to helpers; adds input metric tests.
ui-tui/src/tests/scroll.test.ts	Tests selection-aware scroll clamping behavior.
ui-tui/src/tests/interactionMode.test.ts	Tests interaction mode timing/priority.
ui-tui/src/tests/createSlashHandler.test.ts	Tests default /model --global persistence behavior.
ui-tui/packages/hermes-ink/src/ink/components/ScrollBox.tsx	Refactors scrollBy implementation and supports clamp bounds on element.
ui-tui/packages/hermes-ink/src/ink/components/App.tsx	Keeps native cursor visible; adjusts click-disable logic ordering.
tui_gateway/server.py	Adds /details command + argument completion in gateway slash completion.
tests/test_tui_gateway_server.py	Adds pytest coverage for /details slash completions.

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[Copilot]

Pull request overview

This PR focuses on improving TUI stability and perceived performance during long sessions by tightening scroll virtualization/clamping, reducing composer reflow/jitter, and throttling streaming updates while the user is actively typing.

Changes:

• Add viewport/input-metrics helpers (snapshot + cursor/wrap metrics) and refactor consumers to use them, with new unit tests.
• Improve scroll behavior: virtual-history clamp bounds integration and selection-aware scrolling extracted into a shared helper.
• Reduce typing/render overhead: coalesce parent input updates, add safe terminal “fast echo” paths, and adjust streaming batching while typing; plus persist /model selections by default and add /details slash completions.

Reviewed changes

Copilot reviewed 28 out of 29 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
ui-tui/src/types/hermes-ink.d.ts	Extends ScrollBoxHandle typing with setClampBounds.
ui-tui/src/lib/viewportStore.ts	Introduces viewport snapshot + subscription hook for scroll consumers.
ui-tui/src/lib/inputMetrics.ts	Centralizes cursor layout/wrap metrics and stable composer column calculation.
ui-tui/src/hooks/useVirtualHistory.ts	Hooks virtual-history range into ScrollBox clamp bounds to prevent spacer-only frames on burst scroll.
ui-tui/src/config/timing.ts	Adds new timing constants for streaming cadence and typing/scrolling idle thresholds.
ui-tui/src/config/limits.ts	Adjusts wheel scroll step.
ui-tui/src/components/textInput.tsx	Adds fast-echo + coalesced parent updates, native cursor usage, and cached width logic.
ui-tui/src/components/appLayout.tsx	Reserves stable composer width/gutter and uses new input metric helpers.
ui-tui/src/components/appChrome.tsx	Refactors sticky prompt + scrollbar computations to use useViewportSnapshot.
ui-tui/src/app/useSubmission.ts	Damps streaming while typing; queues “session busy” submits instead of surfacing errors.
ui-tui/src/app/useMainApp.ts	Uses shared selection-aware scrolling helper; persists model picker changes via --global; removes progress freezing.
ui-tui/src/app/turnController.ts	Makes streaming batch delay adjustable (idle vs typing).
ui-tui/src/app/slash/commands/session.ts	Ensures /model changes persist by default by appending --global.
ui-tui/src/app/scroll.ts	New shared scrollWithSelectionBy helper with clamped deltas.
ui-tui/src/app/interfaces.ts	Expands SelectionApi to support selection-aware scroll shifting/capture.
ui-tui/src/app/interactionMode.ts	Adds shared idle/typing/scrolling mode tracking with timers.
ui-tui/src/app/createGatewayEventHandler.ts	Streams legacy thinking.delta into reasoning state updates.
ui-tui/src/tests/virtualHistoryClamp.test.ts	Tests clamp gating logic for sticky vs manual scroll.
ui-tui/src/tests/viewportStore.test.ts	Tests viewport snapshot math + keying includes pending delta.
ui-tui/src/tests/textInputWrap.test.ts	Moves wrap parity tests to new helpers; adds tests for composer metrics.
ui-tui/src/tests/scroll.test.ts	Tests selection-aware scrolling clamping behavior.
ui-tui/src/tests/interactionMode.test.ts	Tests idle timeout and typing priority behavior.
ui-tui/src/tests/createSlashHandler.test.ts	Tests default /model --global behavior and avoids duplication.
ui-tui/src/tests/createGatewayEventHandler.test.ts	Tests legacy thinking delta feeding reasoning state.
ui-tui/packages/hermes-ink/src/ink/ink.tsx	Adds selection drag auto-scroll support and integrates selection bounds tracking.
ui-tui/packages/hermes-ink/src/ink/components/ScrollBox.tsx	Refactors scrollBy implementation into a reusable internal function and adds clamp bounds setter.
ui-tui/packages/hermes-ink/src/ink/components/App.tsx	Keeps native cursor visible; adjusts mouse click disabling behavior.
tui_gateway/server.py	Adds /details command + argument completions in complete.slash.
tests/test_tui_gateway_server.py	Adds tests for /details slash completion and arguments.

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[Copilot]

Pull request overview

This PR targets long-session TUI performance and responsiveness by reducing render work on scroll/stream/typing hot paths, adding bounded caches + eviction in @hermes/ink, and isolating frequently-updating turn state from the broader UI shell.

Changes:

• Add virtualization/scroll improvements, including wheel acceleration, viewport snapshots, and virtual height estimation + caching.
• Introduce bounded/LRU caching + explicit eviction for expensive Ink internals (stringWidth, ANSI slicing, wrapping) plus perf/FPS instrumentation hooks.
• Refactor TUI streaming/progress/todo rendering and state subscriptions (selector-based turn store) to avoid broad invalidations.

Reviewed changes

Copilot reviewed 97 out of 100 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
ui-tui/src/types/hermes-ink.d.ts	Extends Ink typings for frame callbacks, fast-path stats, cache eviction, and ScrollBox additions.
ui-tui/src/types.ts	Adds todo types/fields on messages and session info fields for status display.
ui-tui/src/lib/wheelAccel.ts	Implements wheel-scroll acceleration heuristics with host detection and env overrides.
ui-tui/src/lib/virtualHeights.ts	Adds message height keying + height estimation for virtualization.
ui-tui/src/lib/viewportStore.ts	Adds viewport snapshot/store keyed for stable subscriptions.
ui-tui/src/lib/todo.ts	Adds todo glyph/tone helpers for consistent transcript rendering.
ui-tui/src/lib/todo.test.ts	Unit tests for todo glyph/tone behavior.
ui-tui/src/lib/text.ts	Adds bounded render text helpers, thinking cleanup, tool duration formatting, and related utilities.
ui-tui/src/lib/perfPane.tsx	Adds opt-in perf logging for React commits and Ink frame events.
ui-tui/src/lib/messages.ts	Routes transcript appends through tool-shelf merging logic.
ui-tui/src/lib/messages.test.ts	Tests transcript append behavior for tool shelves.
ui-tui/src/lib/memoryMonitor.ts	Evicts Ink caches under memory pressure before heap dump/exit.
ui-tui/src/lib/liveProgress.ts	Adds tool shelf merging + todo state helpers for live progress rendering.
ui-tui/src/lib/liveProgress.test.ts	Tests tool shelf merge behavior and todo completion checks.
ui-tui/src/lib/inputMetrics.ts	Factors cursor layout + composer sizing helpers out of TextInput.
ui-tui/src/lib/fpsStore.ts	Adds opt-in FPS tracker store fed from Ink onFrame.
ui-tui/src/gatewayTypes.ts	Extends tool events to include todos and completion durations.
ui-tui/src/entry.tsx	Wires Ink onFrame to perf logging + FPS tracking when enabled.
ui-tui/src/domain/details.ts	Adjusts details-mode layering with a command override path.
ui-tui/src/config/timing.ts	Adds separate streaming batch timings and typing idle threshold.
ui-tui/src/config/limits.ts	Adds render tail limits and reduces base wheel scroll step to keep scroll fast path viable.
ui-tui/src/config/env.ts	Adds INLINE_MODE + SHOW_FPS flags and shared truthy parsing.
ui-tui/src/components/todoPanel.tsx	Adds interactive/collapsible todo rendering panel.
ui-tui/src/components/thinking.tsx	Bounds full reasoning render, threads commandOverride into section visibility, and displays tool durations.
ui-tui/src/components/textInput.tsx	Adds stdout-based fast echo paths + coalesced parent updates and stable cursor/layout behavior.
ui-tui/src/components/streamingMarkdown.tsx	Adds incremental streaming markdown renderer split by stable block boundary.
ui-tui/src/components/streamingAssistant.tsx	Splits streaming assistant rendering and adds live todo anchoring panel.
ui-tui/src/components/messageLine.tsx	Adds streaming markdown path, history render bounding, todo trail rendering, and tool injection support.
ui-tui/src/components/markdown.tsx	Adds theme-keyed, bounded cross-instance markdown parse cache (LRU).
ui-tui/src/components/fpsOverlay.tsx	Adds opt-in FPS overlay component.
ui-tui/src/components/appLayout.tsx	Refactors layout to PerfPane-wrapped sections, adds inline mode, stable composer sizing, and live todo anchoring.
ui-tui/src/components/appChrome.tsx	Switches to selector-based turn state + viewport snapshots; enriches model label rendering.
ui-tui/src/components/agentsOverlay.tsx	Switches overlay to selector-based subagent subscriptions.
ui-tui/src/app/useSubmission.ts	Adds typing-driven streaming backoff/relax behavior; improves queued submit behavior; tweaks session-busy errors.
ui-tui/src/app/useSessionLifecycle.ts	Adds active-session file writing + Ink cache eviction on reset/resume paths.
ui-tui/src/app/useMainApp.ts	Adds virtual height caching, transcript append merging, selector-based turn reads, and updated model persistence behavior.
ui-tui/src/app/useLongRunToolCharms.ts	Moves to selector-based tool reads and avoids rerenders from unrelated turn updates.
ui-tui/src/app/useInputHandlers.ts	Adds wheel acceleration and scroll-driven streaming backoff behavior.
ui-tui/src/app/useConfigSync.ts	Clears detailsModeCommandOverride on config sync.
ui-tui/src/app/uiStore.ts	Adds detailsModeCommandOverride to UI state.
ui-tui/src/app/turnStore.ts	Adds selector hook, todo state, and end-of-turn todo archival helpers.
ui-tui/src/app/slash/commands/session.ts	Makes /model persist globally by default; avoids duplicate --global.
ui-tui/src/app/slash/commands/ops.ts	Removes unused transcript pager helper usage.
ui-tui/src/app/slash/commands/core.ts	Threads detailsModeCommandOverride semantics through /details.
ui-tui/src/app/scroll.ts	Extracts selection-aware scrolling into a reusable helper.
ui-tui/src/app/interfaces.ts	Extends SelectionApi and narrows AppLayoutProgressProps to showProgressArea.
ui-tui/src/app/createGatewayEventHandler.ts	Records reasoning deltas/todos; supports tool duration/todos and inline-diff tool completion flow.
ui-tui/src/tests/wheelAccel.test.ts	Tests wheel acceleration state machine behavior.
ui-tui/src/tests/virtualHistoryClamp.test.ts	Tests virtual history clamping decisions.
ui-tui/src/tests/virtualHeights.test.ts	Tests stable keying and height estimates.
ui-tui/src/tests/viewportStore.test.ts	Tests viewport snapshot normalization and key behavior.
ui-tui/src/tests/useSessionLifecycle.test.ts	Tests active-session file writing helper.
ui-tui/src/tests/turnStore.test.ts	Tests todo archiving and collapse toggling behavior.
ui-tui/src/tests/textInputWrap.test.ts	Moves cursorLayout tests to inputMetrics and adds composer sizing tests.
ui-tui/src/tests/text.test.ts	Adds tests for bounded render text, tool duration formatting, and thinking formatting changes.
ui-tui/src/tests/streamingMarkdown.test.ts	Tests stable boundary detection for incremental streaming markdown.
ui-tui/src/tests/stateIsolation.test.ts	Tests UI subscriber isolation from high-frequency turn updates.
ui-tui/src/tests/scroll.test.ts	Tests selection-aware scroll clamping behavior.
ui-tui/src/tests/reasoning.test.ts	Adds tests for cleaning thinking/status ticker noise.
ui-tui/src/tests/messages.test.ts	Adds regression test ensuring resume preserves tool-call rows.
ui-tui/src/tests/details.test.ts	Tests details mode layering with command overrides.
ui-tui/src/tests/createSlashHandler.test.ts	Tests /model persistence default and details override behavior.
ui-tui/scripts/profile-tui.mjs	Adds a profiling harness script for synthetic streaming/layout scenarios.
ui-tui/packages/hermes-ink/src/utils/sliceAnsi.ts	Adds bounded LRU caching + eviction helpers for ANSI slicing.
ui-tui/packages/hermes-ink/src/ink/wrap-text.ts	Adds bounded memoization and eviction for wrapping/truncation logic.
ui-tui/packages/hermes-ink/src/ink/termio/osc.ts	Minor refactors/formatting in clipboard emission logic.
ui-tui/packages/hermes-ink/src/ink/terminal.ts	Adds xterm.js key support, diff-write telemetry (bytes/backpressure/drain timing), and return values.
ui-tui/packages/hermes-ink/src/ink/stringWidth.ts	Adds bounded memoization + eviction for string width calculation.
ui-tui/packages/hermes-ink/src/ink/render-node-to-output.ts	Adds fast-path diagnostics counters for scroll DECSTBM optimization.
ui-tui/packages/hermes-ink/src/ink/output.ts	Adds clip fast path to avoid ANSI slicing when line fits.
ui-tui/packages/hermes-ink/src/ink/lru.ts	Introduces shared LRU eviction helper for Ink caches.
ui-tui/packages/hermes-ink/src/ink/line-width-cache.ts	Converts line-width cache eviction to LRU and exposes eviction/size helpers.
ui-tui/packages/hermes-ink/src/ink/ink.tsx	Adds frame drain/backpressure telemetry and selection auto-scroll during drag selection.
ui-tui/packages/hermes-ink/src/ink/frame.ts	Extends FrameEvent phases to include write telemetry and optimized patch count.
ui-tui/packages/hermes-ink/src/ink/events/input-event.ts	Refactors special-sequence input normalization (space/return/escape).
ui-tui/packages/hermes-ink/src/ink/events/cmd-shortcuts.test.ts	Adds tests for modified Enter parsing sequences.
ui-tui/packages/hermes-ink/src/ink/components/ScrollBox.tsx	Tracks last manual scroll timestamp and exposes it on handle.
ui-tui/packages/hermes-ink/src/ink/components/App.tsx	Adjusts focus/mouse handling behavior and terminal mode toggles.
ui-tui/packages/hermes-ink/src/ink/cache-eviction.ts	Adds unified eviction API for Ink’s bounded caches.
ui-tui/packages/hermes-ink/src/entry-exports.ts	Exposes cache eviction, isXtermJs, and scroll fast-path stats.
ui-tui/packages/hermes-ink/index.d.ts	Exposes cache eviction API from package typings.
ui-tui/package.json	Adds React Compiler build step + Babel tooling and compiler lint plugin.
ui-tui/eslint.config.mjs	Wires react-compiler lint rule (warn in app code; off in tests).
ui-tui/babel.compiler.config.cjs	Adds Babel config for the React Compiler post-tsc pass.
tui_gateway/server.py	Improves config cache invalidation, session resume/history lineage display, tool todos, and /details completions.
tests/test_tui_gateway_server.py	Adds gateway tests for tool-call preservation, resume lineage display, and /details completion.
tests/test_hermes_state.py	Adds tests for ancestor-inclusive conversations and de-duping replayed prompts.
tests/hermes_cli/test_tui_resume_flow.py	Ensures TUI launches set NODE_ENV=production and exit summary prefers active-session file.
tests/hermes_cli/test_resolve_last_session.py	Adds tests for “most recently active” session selection logic.
skills/software-development/hermes-agent-skill-authoring/SKILL.md	Adds documentation skill for authoring in-repo skills.
skills/software-development/debugging-hermes-tui-commands/SKILL.md	Adds documentation skill for debugging TUI slash commands end-to-end.
hermes_state.py	Adds ancestor-inclusive conversation loading, replay de-duping, and last_active support in session search.
hermes_cli/web_server.py	Ensures NODE_ENV=production for embedded TUI launches and standardizes env passing.
hermes_cli/main.py	Uses last_active-based session resolution and active-session file to improve exit/resume flows.

Files not reviewed (1)

• ui-tui/package-lock.json: Language not supported

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