On Windows, `spawn()` with `detached: true` sets the
CREATE_NEW_PROCESS_GROUP flag in CreateProcess. In certain terminal
contexts — notably VSCode's integrated terminal (ConPTY), Windows
Terminal, and some MSYS2/Git Bash configurations — this flag conflicts
with the parent process group hierarchy and causes a synchronous EINVAL
from libuv, making *every* bash/async_bash/bg_shell command fail
immediately with `spawn EINVAL`.
The bg-shell extension already guards against this with
`detached: process.platform !== "win32"` (process-manager.ts:109),
but three other spawn sites were missed:
- `packages/pi-coding-agent/src/core/tools/bash.ts` (bash tool)
- `packages/pi-coding-agent/src/core/bash-executor.ts` (RPC executor)
- `src/resources/extensions/async-jobs/async-bash-tool.ts` (async_bash)
This commit aligns all spawn sites with the bg-shell pattern.
Additionally fixes two related issues:
1. `killProcessTree()` in shell.ts used `detached: true` on its own
`taskkill` spawn call — unnecessary and potentially problematic
in the same terminal contexts. Removed.
2. `killTree()` in async-bash-tool.ts used Unix-only
`process.kill(-pid)` with no Windows fallback. On Windows, negative
PIDs (process group kill) are not supported, so orphaned child
processes could survive timeout kills. Now uses `taskkill /F /T`
on Windows, matching the bg-shell and shell.ts implementations.
Includes a regression test that statically verifies no spawn site
uses unconditional `detached: true`, plus a smoke test confirming
the platform-guarded pattern works on all platforms.
Reproduction: Run GSD v2.42-v2.51 inside VSCode on Windows 11 with
Git Bash as the shell. Any bash tool call fails with `spawn EINVAL`.
The error is 100% reproducible and affects all shell operations
(bash, async_bash, bg_shell start).
Co-authored-by: Matt Haynes <matt@auroraventures.io>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
The webSearchResult branch deleted entries from pendingTools after rendering,
which removed the duplicate-prevention guard. Subsequent streaming tokens
re-iterated content blocks, re-created the serverToolUse component, and
re-rendered the search result — producing 18+ duplicate blocks.
The message_end handler already calls pendingTools.clear(), so the explicit
deletes were unnecessary and harmful.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Runs commands in the user's login shell ($SHELL -l -c) so PATH additions
and env vars from shell profiles (.zprofile/.profile) are available.
Shell aliases are intentionally not loaded (requires -i which causes
startup noise and job control side effects).
Implementation spawns $SHELL directly via a loginShell flag threaded
through the bash executor — no double-shell wrapping.
- Registered as builtin slash command with autocomplete
- Reuses existing bash execution pipeline (streaming, session recording)
- Output included in LLM context for agent reference
- Added loginShell option to executeBash and handleBashCommand
- Browser mode rejects /terminal (terminal-only command)
- Updated web-command-parity-contract tests
AI-assisted: This change was authored with Claude (AI pair programming).
* feat: integrate managed RTK across shell workflows
* fix(rtk): unify managed fallback and live savings wiring
* fix(rtk): improve TUI status visibility
* fix(tests): make portability tests independent of pi-coding-agent dist build
The CI portability test runs don't guarantee that
packages/pi-coding-agent has been compiled. Any test that
imported files pulling in @gsd/pi-coding-agent (resource-loader,
preferences-skills, async-bash-tool, etc.) crashed with
ERR_MODULE_NOT_FOUND pointing at dist/index.js.
Two changes to dist-redirect.mjs (the Node ESM loader hook used by
all unit tests):
- Redirect the bare @gsd/pi-coding-agent specifier to the workspace
source entrypoint (src/index.ts) so no dist/ artifact is needed.
- Extend the load() hook to transpile *.ts files under
packages/pi-coding-agent/src/ through TypeScript's transpileModule.
Node's --experimental-strip-types can't handle parameter properties
and similar syntax present in that package's source; full transpilation
avoids the ERR_UNSUPPORTED_TYPESCRIPT_SYNTAX crash.
Also fix the dashboard.tsx responsive grid:
- xl:grid-cols-5 → xl:grid-cols-4 2xl:grid-cols-5
(5 metric cards no longer fit at xl without overflow; test contract
expected xl:grid-cols-4)
- Keep loading-skeletons.tsx in sync with the same breakpoints.
Add src/tests/resolve-ts-loader.test.ts to guard the loader behaviour:
- bare @gsd/pi-coding-agent redirect points to workspace source
- direct source-entry rewrite (.js → .ts)
- transpilation removes TS parameter property syntax that strip-only
mode cannot parse
* fix(tests): redirect all workspace package imports to source in portability tests
The previous fix only redirected @gsd/pi-coding-agent to its
source entrypoint. In CI, pi-coding-agent/src itself imports
@gsd/pi-ai (and other workspace packages) which were still pointing
at dist/. Since no workspace dist is built during the portability
test run, any transitive resolution hit the same ERR_MODULE_NOT_FOUND.
Changes to dist-redirect.mjs:
- Redirect @gsd/pi-ai, @gsd/pi-ai/oauth, @gsd/pi-agent-core, and
@gsd/pi-tui bare imports to their workspace src/ entrypoints.
- Broaden the load() transpilation condition from
'/packages/pi-coding-agent/src/' to '/packages/*/src/' so that
all workspace source files are run through TypeScript's
transpileModule, handling parameter properties and other syntax
that Node's strip-only mode rejects.
Verified by hiding all four workspace dist/ directories locally and
running the failing test set — 96/96 pass.
* fix(tests): redirect @gsd/native sub-paths; fix Windows .cmd spawnSync
Two more portability failures after the previous fix:
1. @gsd/native sub-path imports (@gsd/native/fd, @gsd/native/text, etc.)
were not redirected — the loader only handled the bare specifier.
Added a prefix-match redirect for @gsd/native/* → packages/native/src/<sub>/index.ts.
2. Windows RTK tests failed because createFakeRtk produces a .cmd wrapper
on Windows, and spawnSync(binaryPath, [...]) without shell:true silently
returns non-zero when the binary is a .cmd file.
Added shell: /\.(cmd|bat)$/i.test(binaryPath) to the spawnSync calls in:
- src/resources/extensions/shared/rtk.ts (rewriteCommandWithRtk)
- src/resources/extensions/shared/rtk-session-stats.ts (readCurrentRtkGainSummary)
- packages/pi-coding-agent/src/utils/rtk.ts (rewriteCommandForGsd)
Production use of rtk.exe is unaffected; the shell flag is only true for
.cmd/.bat paths.
Verified: all 93 portability tests pass with all workspace dist/ directories
removed (simulating CI portability environment).
* fix(tests): Windows portability fixes — HOME env, managed RTK path, perf threshold
Four Windows-specific failures fixed:
1. app-smoke.test.ts: process.env.HOME is undefined on Windows (uses
USERPROFILE instead). Changed to homedir() from node:os which works
cross-platform.
2. Managed RTK path tests on Windows: tests placed a fake RTK as rtk.exe
(by copying a .cmd script into a .exe filename), which Windows cannot
execute. Two-part fix:
- resolveRtkBinaryPath() in both rtk.ts files now falls back to rtk.cmd
in the managed dir on Windows when rtk.exe is absent.
- withManagedFakeRtk and equivalent patterns in rtk.test.ts,
rtk-session-stats.test.ts, rtk-execution-seams.test.ts changed to
place the fake at rtk.cmd instead of rtk.exe on Windows.
3. bg_shell RTK test on Windows: requires bash (for shell sessions), which
is not available on the blacksmith-4vcpu-windows-2025 runner without
Git Bash installed. Test now skips on win32.
4. derive-state-db perf assertion: 10ms threshold was too tight for Windows
CI runners (measured 12ms under load). Raised to 25ms — still catches
real regressions (baseline is 3ms locally and ~12ms on stressed runners).
* fix(tests): fix managed RTK path fallback on Windows in src/rtk.ts + fix copyable fake
Two remaining Windows failures:
1. src/rtk.ts was never patched with the rtk.cmd managed-dir fallback
(only the shared/rtk.ts and pi-coding-agent/src/utils/rtk.ts were updated).
Added the same rtk.cmd fallback and shell:.cmd detection to src/rtk.ts,
which is what rtk.test.ts imports from.
2. createFakeRtk on Windows wrote '%~dp0\fake-rtk.js' in the .cmd content —
this resolves relative to the .cmd file's own directory. When the test
copies rtk.cmd to a different managed dir, %~dp0 resolves to the copy
destination where fake-rtk.js does not exist. Fixed by embedding the
absolute path to fake-rtk.js directly in the .cmd content so the fake
works correctly regardless of where the .cmd is copied.
* feat(experimental): add RTK opt-in preference with web UI toggle
- Add `experimental` category to GSDPreferences with `rtk: boolean` (default: false)
- RTK is now opt-in: disabled by default for all projects unless explicitly enabled
- Validate experimental.* keys; unknown experimental keys produce warnings
Web UI:
- Add ExperimentalPanel component with animated toggle switch per flag
- Add /api/experimental route (GET/PATCH) to read/write flags in preferences.md
- Add 'Experimental' tab to settings dialog sidebar nav (FlaskConical icon)
- Include ExperimentalPanel at bottom of gsd-prefs mega-scroll
- Fix toggle disabled state: trigger loadSettingsData for 'experimental' section
and self-fetch on mount when data is absent
Dashboard:
- Gate RTK Saved metric card on rtkEnabled from live auto state (web)
- Gate TUI dashboard RTK savings row on rtkEnabled
- Gate TUI footer RTK status updates on experimental.rtk preference
- Propagate rtkEnabled through AutoDashboardData → bridge-service → store
Build:
- Add scripts/build-if-stale.cjs: incremental build driver that skips each
step (packages, root tsc, copy-resources, web) when output is newer than
source; replaces full rebuild chain in gsd:web
- Add scripts/web-stop.cjs: robust stop with registry + legacy PID + orphan
sweep via pgrep; handles crash/restart orphaned next-server processes
- gsd:web now uses build-if-stale.cjs (fast cold starts, instant when unchanged)
- gsd:web:stop / gsd:web:stop:all use web-stop.cjs directly
Fix: correct import path in rtk-status.ts (./preferences.js not ../preferences.js)
* fix: restore em-dash encoding in package.json to match upstream
* refactor(rtk): move command rewrite out of pi-coding-agent into GSD extension
Per review feedback from igouss: pi-coding-agent should not be modified to add
GSD-specific logic. Instead, add a proper extension point and wire RTK through it.
Changes to packages/pi-coding-agent (extension API only — no RTK logic):
- Add BashTransformEvent + BashTransformEventResult types to extension API
- Add on('bash_transform') overload to ExtensionAPI interface
- Add emitBashTransform() to ExtensionRunner (chains all handlers in order)
- Call emitBashTransform() in wrapToolWithExtensions before bash tool execution
- Export new types from extensions/index.ts and package index.ts
- Revert all RTK-specific changes from bash-executor.ts, tools/bash.ts
- Remove packages/pi-coding-agent/src/utils/rtk.ts entirely
Changes to GSD extension:
- Register bash_transform handler in register-hooks.ts that calls
rewriteCommandWithRtk() from the existing shared/rtk.ts module
- Handler is a no-op when RTK is disabled or not installed
* fix: correct import path for shared/rtk.js in register-hooks
* fix(tests): remove deleted pi-coding-agent/utils/rtk imports from execution seams test
The RTK rewrite logic was moved out of pi-coding-agent into the GSD
extension (bash_transform hook). Tests that directly imported the
deleted utils/rtk.ts are removed; remaining tests verify the shared
RTK module and GSD-layer surfaces that still call rewriteCommandWithRtk.
When the API stream is truncated mid-tool-call, PartialMessageBuilder
emits a toolcall_end event with { _raw: "<broken json>" } in the
arguments — but the event looks identical to a healthy tool completion.
Downstream consumers (error classifiers, tool handlers, activity log)
have no way to distinguish a truncated call from a completed one.
Add a malformedArguments: boolean flag to the toolcall_end event variant
in AssistantMessageEvent. The flag is set to true only in the JSON parse
catch path, so existing consumers (which do not check for it) are
unaffected. New consumers like classifyProviderError can use it to
handle truncated tool calls appropriately.
Closes#2574
Server errors (500/502/503/504) are server-side failures — rotating
credentials doesn't help. Only rate_limit and quota_exhausted are
meaningfully credential-scoped. This prevents the cascading backoff
where a single 500 backs off the sole API key for 20s, causing all
subsequent retries to fail with "All credentials temporarily backed off".
Closes#2588
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When a custom provider (e.g. claude-code-cli) registers a streamSimple
handler with the same api type as a built-in (e.g. 'anthropic-messages'),
the global API provider registry was overwritten, routing ALL models of
that api type through the custom handler.
This caused anthropic/claude-opus-4-6 requests to be dispatched through
the Claude Code SDK subprocess instead of the Anthropic API, resulting
in 'Tool not found' errors for Glob, Read, Edit, Bash (SDK tool names
not present in pi's tool registry).
Fix: wrap the registered handler with a model.provider guard so it only
fires for models from the registering provider, delegating to the
previous handler for all other providers.
Closes#2536
The insertChildBefore approach doesn't fix tool ordering because the
message component is already live-streaming text when tool_execution
events arrive. Proper fix requires T3 Code-style session-lifetime
architecture. Revert to simple addChild for now.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add insertChildBefore() to Box component for positional insertion
- In chat controller, insert tool_execution components before the last
assistant message component (instead of appending after) when tools
were executed externally
- Simplify agent-loop externalToolExecution path back to basic
tool_execution_start/end emission
- Toolcall streaming events are filtered in the Claude Code adapter
to prevent duplicate rendering via message_update
Result: externally-executed tool calls render above the text response,
matching the expected visual flow.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Adds `externalToolExecution` flag to AgentLoopConfig. When true, the
agent loop emits tool_execution_start/end events for TUI rendering but
skips local tool dispatch. Used by providers that handle tool execution
internally (e.g., Claude Code CLI via Agent SDK).
The flag is dynamically evaluated per-loop via a callback on
AgentOptions, so model switches mid-session are handled correctly.
Providers with authMode "externalCli" automatically use this mode.
Also updates the Claude Code CLI stream adapter to preserve tool call
blocks in the final message instead of stripping them.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The 13 test files in packages/pi-coding-agent/src/core/ were never executed
in CI or by `npm test`. The test:unit glob only covers src/resources/extensions/gsd/tests/
and src/tests/, leaving lifecycle-hooks, model-registry-auth-mode, auth-storage,
and 10 other suites with zero enforcement.
- Add `test:packages` script that runs compiled dist tests after build
- Wire into both the linux build job and windows-portability job in CI
- Fix two env-isolation bugs in auth-storage.test.ts: the "returns undefined"
and "falls through to fallback resolver" tests were not clearing
OPENROUTER_API_KEY before calling getApiKey, causing failures when the
env var is set in the caller's environment
The napi StreamState fields (utf8Pending, ansiPending) expect plain arrays
(Vec<u8>), not Buffers. Passing Buffer.from() caused 'Given napi value is
not an array on StreamState.utf8Pending' crash on multi-chunk bash output.
Added regression test for multi-chunk state passing.
AI-assisted: This change was authored with Claude (AI pair programming).
Shows absolute timestamps (date + time) on user prompts (right-aligned
above the message) and assistant replies (below the response). Format
is configurable via /settings → Timestamp format:
- date-time-iso: 2026-03-24 10:34 (default)
- date-time-us: 03-24-2026 10:34 AM
Setting persists in settings.json as timestampFormat.
- Added formatTimestamp utility with ISO and US format support
- Updated UserMessageComponent and AssistantMessageComponent
- Added timestampFormat to SettingsManager with getter/setter
- Added to /settings UI for runtime switching
- Unit tests for all format variants including AM/PM edge cases
AI-assisted: This change was authored with Claude (AI pair programming).
* feat: complete offline mode support for local-only model setups
- Add isLocalModel() to detect localhost/127.0.0.1/0.0.0.0/::1/unix sockets
- Add isAllLocalChain() to verify all registry models are local
- Validate --offline flag rejects remote models with clear error
- Auto-enable PI_OFFLINE when all configured models are local
- Return dummy API key for local models to skip auth validation
- Filter web search results in offline mode (chat-controller + tool-execution)
- Add ECONNREFUSED/ENOTFOUND/ENETUNREACH to INFRA_ERROR_CODES for immediate
failure (no retry) when network is intentionally unavailable
- Add comprehensive test suite (17 tests)
Fixes#2341
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(test): update infra-error test for new offline-mode error codes
The offline mode feature added ECONNREFUSED, ENOTFOUND, and ENETUNREACH
to INFRA_ERROR_CODES but the test still asserted size === 6. Update the
count to 9 and add detection tests for the three new codes.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat(core): add generic native post-install hooks for package install
* feat(core): add before/after install/remove lifecycle hooks
* refactor(core): remove postInstall alias from lifecycle hook fallback
* feat(core): complete authMode support for keyless providers
The initial authMode implementation fixed model-registry, sdk, and
fallback-resolver but missed agent-session.ts (6 callsites) and
compaction-orchestrator.ts (2 callsites) that block externalCli
providers at runtime.
Architecture: separate readiness gating from credential retrieval.
- isProviderRequestReady(): authMode-aware readiness check
- getApiKey()/getApiKeyForProvider(): return undefined for
externalCli/none providers instead of triggering auth errors
- All 8 callsites in agent-session and compaction-orchestrator
now gate on readiness, not key presence
- Downstream signatures (compaction, branch-summarization) accept
apiKey: string | undefined
- Replaced hardcoded ollama exception in discoverModels with
isProviderRequestReady
Zero behavioral change for classic apiKey/oauth providers.
* feat(core): add isReady callback for provider readiness verification
Extensions can now provide an isReady() callback when registering any
provider. isProviderRequestReady() calls it before default auth checks,
allowing providers to verify actual reachability (CLI authenticated,
API key valid, service online) rather than relying solely on credential
presence.
* test(core): expand authMode test coverage
Cover all four auth modes (apiKey, oauth, externalCli, none),
isReady callback behavior, getProviderAuthMode defaults,
isProviderRequestReady for each mode, getAvailable filtering,
and getApiKey early-return for keyless providers.
* chore: remove provider-api-bridge files from this branch
These files implement GSD core → provider-api wiring (deps + tool
registry) and belong in a separate PR. Reverts register-extension.ts
to upstream state.
When a user creates a .js extension file but writes TypeScript syntax in it,
the loader now detects common TS patterns (type annotations, interfaces, enums,
generics) and provides a clear error message suggesting to rename the file to
.ts, instead of the previous cryptic "Extension does not export a valid factory
function" or opaque jiti parse errors.
Fixes#2381
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(memory): fix memory and resource leaks across TUI, LSP, DB, and automation
Addresses all findings from a systematic memory leak audit across five
dimensions: event listeners, timers, file system handles, subscriptions/
closures, and GSD automation lifecycle.
Critical fixes:
rpc-client.ts: stderr .on("data") handler attached in start() was never
removed in stop(). Now stored as _stderrHandler and removed via
removeListener() on stop.
lsp/client.ts: Three process.on() handlers (beforeExit, SIGINT, SIGTERM)
registered at module load time with anonymous functions — impossible to
remove. Now stored as named references; new removeProcessHandlers() export
allows graceful teardown. stdout/stderr stream listeners in
startMessageReader/startStderrReader also stored per-client in
clientStreamHandlers map and removed in shutdownClient() and shutdownAll().
parallel-orchestrator.ts: spawnWorker() attached 5 listeners to child
process streams on every spawn with no removal on worker stop/respawn,
accumulating listeners indefinitely. Added cleanup() field to WorkerInfo;
called via removeAllListeners() on exit, graceful stop, stale detection,
and dead PID cleanup paths. Also: module-level state.workers Map was never
cleared between orchestration runs; startParallel() and resetOrchestrator()
now iterate and clean up all WorkerInfo entries before reassigning state.
scripts/watch-resources.js: fs.watch() return value was discarded (OS
watcher never closed) and the fallback setInterval handle was also
discarded (timer ran forever). Both now stored; process.on("exit") handler
closes/clears them.
gsd-db.ts: closeDatabase() did not checkpoint the WAL before closing —
.db-shm/.db-wal files accumulated on disk across crash-recovery cycles.
Now runs PRAGMA wal_checkpoint(TRUNCATE) before close. Also added a
one-time process.on("exit") handler in openDatabase() so the handle is
always closed even on unclean exits.
Medium fixes:
bg-shell/overlay.ts: 1-second refresh setInterval only cleared in
keyboard exit handler; abnormal teardown leaked the timer. Added dispose()
method that unconditionally clears it.
file-watcher.ts: pending debounce Map was scoped inside startFileWatcher()
making it inaccessible to stopFileWatcher(). Moved to module scope;
stopFileWatcher() now clears all pending timers and empties the map before
closing the watcher.
auto-supervisor.ts: registerSigtermHandler() could accumulate multiple
SIGTERM handlers if called without passing back the previous reference.
Added module-level _currentSigtermHandler; old handler is always removed
before registering the new one regardless of whether caller passes it.
Low-severity fixes:
print-mode.ts: session.subscribe() return value was discarded. Now stored
and called in a finally block to guarantee cleanup on both normal
completion and errors.
rpc-mode.ts: same — subscribe() unsubscribe now called in the shutdown
path before process.exit().
theme.ts: onThemeChangeCallback singleton silently overwrote any previous
subscriber. Converted to Set<() => void>; onThemeChange() now returns a
cleanup function. All four internal call sites updated to forEach().
Backward-compatible — existing callers that discard the return are unaffected.
* fix: ensure unsubscribe is called on error/abort in print-mode
The PR #2314 added unsubscribe storage but still called process.exit(1)
directly, bypassing the unsubscribe. Wrapped in try/finally to guarantee
cleanup runs before exit.
The alibaba-coding-plan provider (8 models) was silently dropped when
models.generated.ts was regenerated from models.dev in PR #2118. This
provider uses a proprietary DashScope endpoint not tracked by models.dev,
so regeneration removes it every time.
Add models.custom.ts for manually-maintained providers that don't exist
in models.dev. The model registry (models.ts) now merges both generated
and custom models at startup. Custom entries are additive and never
overwrite generated ones.
Restores: qwen3.5-plus, qwen3-max-2026-01-23, qwen3-coder-next,
qwen3-coder-plus, MiniMax-M2.5, glm-5, glm-4.7, kimi-k2.5
Fixes#2339
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Adds opt-in per-prompt cost display to the interactive footer. Users
enable it by setting `show_token_cost: true` in their preferences.md.
Disabled by default — the footer behavior is unchanged unless opted in.
Fixes#1515
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Fixes#2083
When an OpenRouter API key is stored in auth.json as type:"oauth" (instead
of type:"api_key"), getApiKey() calls getOAuthProvider("openrouter") which
returns undefined — OpenRouter is not a registered OAuth provider. Previously,
resolveCredentialApiKey returned undefined and getApiKey returned that directly,
never reaching the env-var or fallback-resolver paths.
Now, when resolveCredentialApiKey returns undefined, getApiKey falls through
to OPENROUTER_API_KEY env var and the fallback resolver instead of silently
failing with "Authentication failed."
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Skip jiti JIT compilation for bundled extensions that have pre-compiled .js
siblings, enable V8 bytecode caching on Node 22+, and batch directory
discovery to reduce syscalls during resource loading.
Fixes#2108
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Fix three sources of unbounded memory growth in the LSP client:
1. Message buffer: Add a 10 MB cap on client.messageBuffer. If an LSP
server sends incomplete or malformed data that causes the buffer to
exceed this limit, the buffer is discarded and reset to prevent
runaway memory usage.
2. Client/lock map eviction: clientLocks and fileOperationLocks entries
were never removed when a client was shut down via shutdownClient().
Now both maps are cleaned up alongside the clients map on shutdown.
3. Idle checker lifecycle: The idle check interval now stops itself when
no clients remain, and shutdownAll() explicitly stops it and clears
all global maps (clients, clientLocks, fileOperationLocks).
