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feat(proxy-clients): make Copilot's auto-configuration actually take effect - #1593
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📝 WalkthroughWalkthroughThe proxy configuration flow now supports post-apply notes. Copilot writes a default model identifier, detects whether its environment script is sourced, and reports required follow-up actions. Tests cover both behaviors. Generated API references were refreshed. ChangesCopilot proxy configuration
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to Copilot configuration can still appear active when only a commented profile line exists, leaving users connected to GitHub instead of the proxy, and the shipped CLI path is not directly validated by the new tests. Merge readiness is moderate until profile detection is corrected and built-CLI behavior is verified. Sequence Diagram(s)sequenceDiagram
participant User
participant ProxyCommand
participant applyAllClients
participant CopilotConfigurator
participant ShellProfiles
User->>ProxyCommand: start or setup proxy
ProxyCommand->>applyAllClients: apply client configurations
applyAllClients->>CopilotConfigurator: apply()
CopilotConfigurator-->>applyAllClients: applied configuration
applyAllClients->>CopilotConfigurator: postApplyNote(proxyBaseUrl)
CopilotConfigurator->>ShellProfiles: inspect profile files
ShellProfiles-->>CopilotConfigurator: sourcing status
CopilotConfigurator-->>applyAllClients: optional follow-up note
applyAllClients-->>ProxyCommand: apply result
ProxyCommand-->>User: successful configuration and optional note
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 9 functions across 6 files. (12 skipped: 12 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@src/cli/proxy-clients/copilot.ts`:
- Line 62: Update the profile detection condition around fs.readFileSync so it
ignores commented lines and matches an actual source or dot command referencing
copilot-env.sh. Preserve the activation-note behavior only when the generated
script is genuinely sourced.
In `@test/continuous-test-suite-proxy.ts`:
- Around line 3823-3824: Update both tests using applyAllClients and
restoreAllClients to invoke the built CLI through runCLI, targeting the shipped
dist/cli/index.js entrypoint instead of importing source-only configurator
internals. Assert the CLI note and generated model export from the command
result while preserving each test’s existing scenario and cleanup behavior.
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📒 Files selected for processing (18)
docs/api/type-aliases/CliAccountUsageTotals.mddocs/api/type-aliases/CliAccountsResponse.mddocs/api/type-aliases/CliAccountsRow.mddocs/api/type-aliases/CliClientUsageTotals.mddocs/api/type-aliases/CliGeminiSnapshot.mddocs/api/type-aliases/CliOpenCodeSnapshot.mddocs/api/type-aliases/CliProxyClientApplyResult.mddocs/api/type-aliases/CliProxyClientConfigurator.mddocs/api/type-aliases/CliProxyClientRestoreResult.mddocs/api/type-aliases/CliQwenSettings.mddocs/api/type-aliases/ProxyLedgerEntry.mddocs/api/type-aliases/ProxyLedgerFileCursor.mdsrc/cli/commands/proxy.tssrc/cli/proxy-clients/copilot.tssrc/cli/proxy-clients/registry.tssrc/lib/constants/proxyModels.tssrc/lib/types/proxyClient.tstest/continuous-test-suite-proxy.ts
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…effect
`proxy start` printed a green check for Copilot while Copilot went on talking
to GitHub. Two independent reasons, both measured on a stock install.
**The script nothing sources.** Copilot reads provider settings from the
environment only — app.js resolves COPILOT_PROVIDER_BASE_URL through
process.env with no config-file fallback, confirmed by reading the bundle — so
its configurator writes a sourceable script and the user must add one line to a
shell profile. On the machine this was developed against that line was present
in no profile at all: not .zshrc, .zprofile, .bashrc, .bash_profile or
.profile. apply() returned true, applyAllClients counted it applied, the proxy
printed "✓ Auto-configured Copilot CLI settings", and Copilot had never once
used the proxy.
The existing comment beside that print site already states the principle —
a client that keeps talking to its own upstream "looks like the proxy silently
not being used", so "the failure has to be actionable at the level the user
actually reads". It was applied to write failures and not to this, which is the
same outcome reached by a different route.
Configurators gain an optional `postApplyNote`, and results an optional `note`,
for exactly this shape: written, but not yet live, and here is the one line
that fixes it. Copilot returns a note only when no profile sources the script,
so the message disappears once the user has acted rather than nagging forever.
Both render sites print it. The note is requested only when something was
actually written — an instruction to act on configuration that does not exist
would be worse than silence.
**The model that had to be passed every time.** Copilot's BYOK path refuses to
start without an explicit model: `copilot -p "..."` exited 1 with "BYOK
providers require an explicit model". A script that stops at the base URL is
therefore unusable without --model on every invocation. It now exports
COPILOT_PROVIDER_MODEL_ID through `${VAR:-default}`, so a user who exports
their own choice before sourcing keeps it.
DEFAULT_PROXY_MODEL_ID is Sonnet, matching the reasoning already recorded on
DEFAULT_MODELS_BY_TIER's `api` entry. Note this is the opposite call from the
one made for Gemini during #1589 review, and deliberately so: Gemini resolves a
model client-side and works without one, so pinning it there would have frozen
a working default for no reason. Copilot errors without one. The difference is
evidence, not preference.
Verified end to end against the running proxy:
copilot -p "say OK" --allow-all-tools (no --model)
exit=0, proxy attempts delta=5 (was exit=1)
Both tests verified non-vacuous by reverting the specific change each covers
and confirming the suite exits 1.
proxy suite 89 passed · 0 failed · 6 skipped, three consecutive runs
build 0 · check 0 · lint 0 errors · docs drift 0
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- T3792799057-stale-models (#1337): the OpenRouter setup guide prints ids from OpenRouterModels instead of two retired ones. - T3818293827-contextWindows (#1376): 1M windows for claude-opus-5, claude-fable-5, claude-opus-4-8 and claude-opus-4-7 on anthropic and vertex, placed before the 200K claude-opus-4 prefix key. The vendor's model pages (platform.claude.com/docs/en/models) list 1M for all four. - T3788241310-errmsg-filename (#1327): the registry's on-demand PPTX extraction warning names the file. - T4135201670 (#1861): runFfmpeg errors carry stdout and stderr when the process printed any, so the metadata probe's recovery is reachable; the probe keeps ffmpeg's own reason when it finds no duration. - T3885676102-a (#1593): Copilot profile detection requires a real source command naming copilot-env.sh, not any mention of the file name. - PF-T3790294069 (#1335): already fixed on release; a regression case for the hf alias with scoped credentials is added. - T3790294070-class-ctor (#1335): classes registered with registerProvider are built with new; factories are never constructed or retried. - T4113611221 (#1819): stream fallback re-reads tool calls, results and finish reason after the drain; the end-of-turn events now report the fallback's finish reason. - T3837051072-orphan-jsdoc (#1483): the orphan JSDoc moves onto refreshNativeToolDeclarations and states what it returns; the guard wording is provider-neutral. Not done: - T3807182624 (#1354): optional hardening; no URL-valued provider name reaches the six registries. - T3827301753 (#1407): optional extraction; the two emitters differ in finishReason handling and the cited file holds no emitter. - The Copilot built-CLI migration in the draft proxy hunk stays in the separate deferred task. - The same stale OpenRouter id in openRouter/client.ts error text and in the docs, and the missing bedrock rows for the four Claude ids. Verification: build, check, lint, check:tools-tests, check:deps and provider-structure pass, with the suites covering the changed files. Red then green: the five dist-backed fixes in one combined run, the Copilot scan and the ffmpeg error by hash-restored probes, the probe's kept reason by its own run. Controls (alias, factory calls, throwing factory, claude-sonnet-5) stay green on purpose. file-tool-roots fails two analyzeCSV cases on an unmodified release tree too.
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The problem
proxy startprinted a green check for Copilot while Copilot went on talking to GitHub. Two independent reasons, both measured on a stock install.1. The script nothing sources
Copilot reads provider settings from the environment only.
app.jsresolvesCOPILOT_PROVIDER_BASE_URLthroughprocess.envwith no config-file fallback — confirmed by reading the bundle, not assumed:So the configurator writes a sourceable script and the user must add one line to a shell profile. On the machine this was developed against, that line was in no profile at all — not
.zshrc,.zprofile,.bashrc,.bash_profileor.profile.apply()returned true,applyAllClientscounted it applied, the proxy printed✓ Auto-configured Copilot CLI settings, and Copilot had never once used the proxy.The comment already sitting beside that print site states the principle: a client that keeps talking to its own upstream "looks like the proxy silently not being used", so "the failure has to be actionable at the level the user actually reads". It was applied to write failures and not to this — the same outcome reached by a different route.
2. The model that had to be passed every time
Copilot's BYOK path refuses to start without an explicit model:
A script that stops at the base URL is unusable without
--modelon every invocation.The changes
Configurators gain an optional
postApplyNote, and results an optionalnote, for exactly this shape: written, but not yet live, and here is the one line that fixes it. Copilot returns a note only when no profile sources the script, so it disappears once the user acts rather than nagging forever. Both render sites print it. The note is requested only when something was actually written — an instruction to act on configuration that does not exist would be worse than silence.The script now exports
COPILOT_PROVIDER_MODEL_IDthrough${VAR:-default}, so a user who exports their own choice before sourcing keeps it.A deliberate inconsistency, flagged
DEFAULT_PROXY_MODEL_IDis Sonnet, matching the reasoning already recorded onDEFAULT_MODELS_BY_TIER'sapientry.This is the opposite call from the one made for Gemini during #1589's review, where I declined to write
GEMINI_MODEL. That was not inconsistency for its own sake: Gemini resolves a model client-side and works without one, so pinning it would have frozen a working default for no reason. Copilot errors without one. The difference is evidence, not preference.Verification
deltais the proxy's own attempt counter before/after — proof of routing, not just that the CLI answered.Note behaviour:
Both tests verified non-vacuous by reverting the specific change each covers and confirming the suite exits 1.
One caveat on the suite
While two other agents were driving the same live proxy, this suite intermittently failed on
Codex: model discovery route answers the CLIandAttribution: the request log records the calling CLI— a different one each run. I checked a cleanreleasecheckout and it fails the same way under the same load, so it is pre-existing flakiness in live tests that read shared proxy state, not something this PR introduces. Worth knowing before anyone reads a red run here as a regression.Summary by CodeRabbit
New Features
--modeleach time.Documentation