Commit Graph

177 Commits

Author SHA1 Message Date
YeonGyu-Kim 1f8f7b592b docs(AGENTS): update line counts and stats across all AGENTS.md files
- Update main AGENTS.md with current file sizes
- Update complexity hotspot line counts
- Update agent count from 11 to 32 files
- Update CLI utility count to 70
- Update test file count from 100+ to 163

🤖 Generated with assistance of OhMyOpenCode
2026-02-08 17:51:30 +09:00
YeonGyu-Kim c6fafd6624 fix: remove task-continuation-enforcer and restore task tool titles 2026-02-08 17:49:22 +09:00
YeonGyu-Kim a5af7e95c0 Merge pull request #1536 from code-yeongyu/feat/task-continuation-enforcer
feat(hooks): implement task-continuation-enforcer
2026-02-08 16:43:42 +09:00
YeonGyu-Kim 6ce482668b refactor: extract git worktree parser from atlas hook 2026-02-08 13:30:00 +09:00
YeonGyu-Kim 3d4ed912d7 fix(look-at): use synchronous prompt to fix race condition (#1620 regression)
PR #1620 migrated all prompt calls from session.prompt (blocking) to
session.promptAsync (fire-and-forget HTTP 204). This broke look_at which
needs the multimodal-looker response to be available immediately after
the prompt call returns.

Fix: add promptSyncWithModelSuggestionRetry() that uses session.prompt
(blocking) with model suggestion retry support. look_at now uses this
sync variant while all other callers keep using promptAsync.

- Add promptSyncWithModelSuggestionRetry to model-suggestion-retry.ts
- Switch look_at from promptWithModelSuggestionRetry to sync variant
- Add comprehensive tests for the new sync function
- No changes to other callers (delegate-task, background-agent)
2026-02-08 02:36:27 +09:00
Peïo Thibault e984a5c639 test(shared): update model-suggestion-retry tests for promptAsync passthrough 2026-02-07 13:42:49 +01:00
Peïo Thibault 46e02b9457 fix(hooks): switch session.prompt to promptAsync in all hooks 2026-02-07 13:42:24 +01:00
Peïo Thibault b8221a883e fix(shared): switch promptWithModelSuggestionRetry to use promptAsync 2026-02-07 13:38:25 +01:00
YeonGyu-Kim 8280e45fe1 Merge pull request #1613 from code-yeongyu/fix/1561-dead-migration
fix(migration): remove task_system backup rewrite (#1561)
2026-02-07 19:57:22 +09:00
YeonGyu-Kim 36e54acc51 fix(migration): stop task_system backup writes (#1561)
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-02-07 19:51:22 +09:00
YeonGyu-Kim 817c593e12 refactor(migration): split model and category helpers (#1561)
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-02-07 19:51:15 +09:00
YeonGyu-Kim 3ccef5d9b3 refactor(migration): extract agent and hook maps (#1561)
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-02-07 19:51:08 +09:00
YeonGyu-Kim f94ae2032c fix: ensure truncated result stays within maxLength limit 2026-02-07 19:13:35 +09:00
YeonGyu-Kim a0201e17b9 fix: use character limit instead of sentence split for skill description (#358)
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-02-07 19:08:08 +09:00
YeonGyu-Kim db6a899297 Merge pull request #1595 from code-yeongyu/fix/tool-name-whitespace
fix: trim whitespace from tool names before matching
2026-02-07 18:46:09 +09:00
YeonGyu-Kim 66419918f9 fix: make model migration run only once by storing history in _migrations field
- Add _migrations field to OhMyOpenCodeConfigSchema to track applied migrations
- Update migrateModelVersions() to accept appliedMigrations Set and return newMigrations array
- Skip migrations that are already in _migrations (preserves user reverts)
- Update migrateConfigFile() to read/write _migrations field
- Add 8 new tests for migration history tracking

Fixes #1570
2026-02-07 18:25:23 +09:00
YeonGyu-Kim f9742ddfca feat(shared): add safeCreateHook utility for error-safe hook creation 2026-02-07 13:32:45 +09:00
YeonGyu-Kim eb5cc873ea fix: trim whitespace from tool names to prevent invalid tool calls
Some models (e.g. kimi-k2.5) return tool names with leading spaces
like ' delegate_task', causing tool matching to fail.

Add .trim() in transformToolName() and defensive trim in claude-code-hooks.

Fixes #1568
2026-02-07 13:12:47 +09:00
YeonGyu-Kim a691a3ac0a refactor: migrate delegate_task to task tool with metadata fixes
- Rename delegate_task tool to task across codebase (100 files)
- Update model references: claude-opus-4-6 → 4-5, gpt-5.3-codex → 5.2-codex
- Add tool-metadata-store to restore metadata overwritten by fromPlugin()
- Add session ID polling for BackgroundManager task sessions
- Await async ctx.metadata() calls in tool executors
- Add ses_ prefix guard to getMessageDir for performance
- Harden BackgroundManager with idle deferral and error handling
- Fix duplicate task key in sisyphus-junior test object literals
- Fix unawaited showOutputToUser in ast_grep_replace
- Fix background=true → run_in_background=true in ultrawork prompt
- Fix duplicate task/task references in docs and comments
2026-02-06 21:35:30 +09:00
YeonGyu-Kim 4692809b42 Regenerate AGENTS.md hierarchy with latest codebase state 2026-02-06 19:07:12 +09:00
YeonGyu-Kim 60bbeb7304 fix(compaction): remove hardcoded Claude model from compaction hooks 2026-02-06 18:58:48 +09:00
YeonGyu-Kim 3be722b3b1 test: add literal match assertions for regex special char escaping tests 2026-02-06 16:33:34 +09:00
Rishi Vhavle bc782ca4d4 fix: escape regex special chars in pattern matcher
Fixes #1521. When hook matcher patterns contained regex special characters
like parentheses, the pattern-matcher would throw 'SyntaxError: Invalid
regular expression: unmatched parentheses' because these characters were
not escaped before constructing the RegExp.

The fix escapes all regex special characters (.+?^${}()|[\]\) EXCEPT
the asterisk (*) which is intentionally converted to .* for glob-style
matching.

Add comprehensive test suite for pattern-matcher covering:
- Exact matching (case-insensitive)
- Wildcard matching (glob-style *)
- Pipe-separated patterns
- All regex special characters (parentheses, brackets, etc.)
- Edge cases (empty matcher, complex patterns)
2026-02-06 12:48:28 +05:30
YeonGyu-Kim 917bba9d1b Merge pull request #1544 from code-yeongyu/feature/model-version-migration
feat(migration): add model version migration for gpt-5.2-codex and claude-opus-4-5
2026-02-06 16:01:42 +09:00
YeonGyu-Kim 7e5a657f06 feat(migration): add model version migration for gpt-5.2-codex and claude-opus-4-5 2026-02-06 15:55:28 +09:00
YeonGyu-Kim 161a864ea3 fix: remove redundant duplicate claude-opus-4-6 fallback entries
After model version update (opus-4-5 → opus-4-6), several agents had
identical duplicate fallback entries for the same model. The anthropic-only
entry was a superset covered by the broader providers entry, making it dead
code. Consolidate to single entry with all providers.
2026-02-06 15:30:05 +09:00
YeonGyu-Kim 1f64920453 chore: update claude-opus-4-5 references to claude-opus-4-6 (excludes antigravity models) 2026-02-06 15:09:07 +09:00
YeonGyu-Kim 4c7215404e chore: update gpt-5.2-codex references to gpt-5.3-codex 2026-02-06 15:08:33 +09:00
YeonGyu-Kim f796fdbe0a feat(hooks): add TASK_CONTINUATION system directive and hook name 2026-02-06 11:21:37 +09:00
YeonGyu-Kim b8f15affdb feat: check provider connectivity instead of specific model for hephaestus availability
Hephaestus now appears when any of its providers (openai, github-copilot, opencode) is
connected, rather than requiring the exact gpt-5.2-codex model. This allows users with
newer codex models (e.g., gpt-5.3-codex) to use Hephaestus without manual config overrides.

- Add requiresProvider field to ModelRequirement type
- Add isAnyProviderConnected() helper in model-availability
- Update hephaestus config from requiresModel to requiresProvider
- Update cli model-fallback to handle requiresProvider checks
2026-02-06 10:42:46 +09:00
YeonGyu-Kim 11d0005eb5 feat: prioritize claude-opus-4-6 over claude-opus-4-5 in anthropic fallback chains
Add claude-opus-4-6 as the first anthropic provider entry before
claude-opus-4-5 across all agent and category fallback chains.
Also add high variant mapping for think-mode switcher.
2026-02-06 03:31:55 +09:00
YeonGyu-Kim 2224183b5c refactor: remove dead code
🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-02-06 02:51:53 +09:00
sk0x0y b7f7cb4341 fix(model-requirements): use supported variant for gemini-3-pro
Gemini 3 Pro only supports 'low' and 'high' thinking levels according to
Google's official API documentation. The 'max' variant is not supported
and would result in API errors.

Changed variant: 'max' -> 'high' for gemini-3-pro in:
- oracle agent
- metis agent
- momus agent
- ultrabrain category
- deep category
- artistry category

Ref: https://ai.google.dev/gemini-api/docs/thinking-mode
Closes #1433
2026-02-05 17:58:39 +09:00
rooftop-Owl bd3a3bcfb9 fix: handle both string[] and object[] formats in provider-models cache
Category delegation fails when provider-models.json contains model objects
with metadata (id, provider, context, output) instead of plain strings.
Line 196 in model-availability.ts assumes string[] format, causing:
  - Object concatenation: `${providerId}/${modelId}` becomes "ollama/[object Object]"
  - Empty availableModels Set passed to resolveModelPipeline()
  - Error: "Model not configured for category"

This is the root cause of issue #1508 where delegate_task(category='quick')
fails despite direct agent routing (delegate_task(subagent_type='explore'))
working correctly.

Changes:
- model-availability.ts: Add type check to handle both string and object formats
- connected-providers-cache.ts: Update ProviderModelsCache interface to accept both formats
- model-availability.test.ts: Add 4 test cases for object[] format handling

Direct agent routing bypasses fetchAvailableModels() entirely, explaining why
it works while category routing fails. This fix enables category delegation
to work with manually-populated Ollama model caches.

Fixes #1508
2026-02-05 15:32:08 +09:00
YeonGyu-Kim ca31796336 feat: auto port selection when default port is busy 2026-02-05 09:55:15 +09:00
YeonGyu-Kim 708d15ebcc Merge pull request #1475 from code-yeongyu/fix/model-availability-connected-providers
Merging PR #1475 into dev as requested. Cubic review 5/5 accepted.
2026-02-04 16:25:26 +09:00
YeonGyu-Kim 80297f890e fix(model-availability): honor connected providers for fallback
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-02-04 16:00:16 +09:00
YeonGyu-Kim e073412da1 fix(auth): add graceful fallback for server auth injection
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-02-04 14:52:31 +09:00
YeonGyu-Kim 737fac4345 fix(agent-restrictions): add read-only restrictions for metis and momus
- Add metis and momus to AGENT_RESTRICTIONS with same pattern as oracle
- Deny write, edit, task, and delegate_task tools
- Enforces read-only design for these advisor agents
- Addresses cubic review feedback on #1462
2026-02-04 11:36:34 +09:00
YeonGyu-Kim b954afca90 fix(model-requirements): use supported variant for gemini-3-pro (#1463)
* fix(model-requirements): use supported variant for gemini-3-pro

* fix(delegate-task): update artistry variant to high for gemini-3-pro

- Update DEFAULT_CATEGORIES artistry variant from 'max' to 'high'
- Update related test comment
- gemini-3-pro only supports low/high thinking levels, not max
- Addresses Oracle review feedback
2026-02-04 11:26:17 +09:00
YeonGyu-Kim faae3d0f32 fix(model-availability): prefer exact model ID match in fuzzyMatchModel (#1460)
* fix(model-availability): prefer exact model ID match in fuzzyMatchModel

* fix(model-availability): use filter+shortest for multi-provider tie-break

- Change Priority 2 from find() to filter()+reduce()
- Preserves shortest-match tie-break when multiple providers share model ID
- Add test for multi-provider same model ID case
- Addresses Oracle review feedback
2026-02-04 11:25:59 +09:00
dan 2f9004f076 fix(auth): opencode desktop server unauthorized bugfix on subagent spawn (#1399)
* fix(auth): opencode desktop server unauthorized bugfix on subagent spawn

* refactor(auth): add runtime guard and throw on SDK mismatch

- Add JSDoc with SDK API documentation reference
- Replace silent failure with explicit Error throw when OPENCODE_SERVER_PASSWORD is set but client structure is incompatible
- Add runtime type guard for SDK client structure
- Add tests for error cases (missing _client, missing setConfig)
- Remove unrelated bun.lock changes

Co-authored-by: dan-myles <dan-myles@users.noreply.github.com>

---------

Co-authored-by: YeonGyu-Kim <code.yeon.gyu@gmail.com>
Co-authored-by: dan-myles <dan-myles@users.noreply.github.com>
2026-02-04 11:07:02 +09:00
YeonGyu-Kim a651e7f073 docs(agents): regenerate AGENTS.md hierarchy with init-deep
- Root: preserve 3 CRITICAL sections (PR target, OpenCode source, English-only)
- Update all 10 AGENTS.md files with current codebase analysis
- Add complexity hotspots, agent models, anti-patterns
- Sync line counts and structure with actual implementation
2026-02-03 16:21:31 +09:00
YeonGyu-Kim dea13a37a6 feat(task-system): add experimental task system with Claude Code spec alignment (#1415)
* feat(hooks): add tasks-todowrite-disabler hook to block TodoRead/TodoWrite

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

* feat(task-tools): add parallel execution guidance to descriptions

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

* refactor(index): migrate task system to experimental.task_system flag

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

* docs: update AGENTS.md for experimental task system

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

* fix(task-tests): align test field names with Claude Code spec (subject, blockedBy, addBlockedBy)

* fix: address Cubic review feedback

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

* fix: add optional chaining for tasksTodowriteDisabler null check

---------

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-02-03 12:11:23 +09:00
YeonGyu-Kim 62e1687474 feat: add agent fallback and preemptive-compaction restoration
- Add agent visibility fallback for first-run scenarios
- Restore preemptive-compaction hook
- Update migration and schema for preemptive-compaction restoration
2026-02-02 22:40:59 +09:00
YeonGyu-Kim d80adac3fc feat(agents): add grok-code-fast-1 as primary model for explore agent 2026-02-02 21:13:45 +09:00
YeonGyu-Kim 5c68ae3bee fix: honor agent variant overrides (#1394)
* fix(shared): honor agent variant overrides

* test(shared): use model in fallback chain to verify override precedence

Address PR review: test now uses claude-opus-4-5 (which has default
variant 'max' in sisyphus chain) to properly verify that agent override
'high' takes precedence over the fallback chain's default variant.
2026-02-02 21:07:10 +09:00
YeonGyu-Kim 8d29a1c5c7 Implement unified Claude Tasks system with single multi-action tool (#1356)
* chore: pin bun-types to 1.3.6

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* chore: exclude test files and script from tsconfig

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* refactor: remove sisyphus-swarm feature

Remove mailbox types and swarm config schema. Update docs.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* refactor: remove legacy sisyphus-tasks feature

Remove old storage and types implementation, replaced by claude-tasks.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(claude-tasks): add task schema and storage utilities

- Task schema with Zod validation (pending, in_progress, completed, deleted)
- Storage utilities: getTaskDir, readJsonSafe, writeJsonAtomic, acquireLock
- Atomic writes with temp file + rename
- File-based locking with 30s stale threshold

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(tools/task): add task object schemas

Add Zod schemas for task CRUD operations input validation.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(tools): add TaskCreate tool

Create new tasks with sequential ID generation and lock-based concurrency.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(tools): add TaskGet tool

Retrieve task by ID with null-safe handling.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(tools): add TaskUpdate tool with claim validation

Update tasks with status transitions and owner claim validation.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(tools): add TaskList tool and exports

- TaskList for summary view of all tasks
- Export all claude-tasks tool factories from index

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(hooks): add task-reminder hook

Remind agents to use task tools after 10 turns without task operations.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(config): add disabled_tools setting and tasks-todowrite-disabler hook

- Add disabled_tools config option to disable specific tools by name
- Register tasks-todowrite-disabler hook name in schema

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(config-handler): add task_* and teammate tool permissions

Grant task_* and teammate permissions to atlas, sisyphus, prometheus, and sisyphus-junior agents.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* feat(delegate-task): add execute option for task execution

Add optional execute field with task_id and task_dir for task-based delegation.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* fix(truncator): add type guard for non-string outputs

Prevent crashes when output is not a string by adding typeof checks.

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* chore: export config types and update task-resume-info

- Export SisyphusConfig and SisyphusTasksConfig types
- Add task_tool to TARGET_TOOLS list

🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

* refactor(storage): remove team namespace, use flat task directory

* feat(task): implement unified task tool with all 5 actions

* fix(hooks): update task-reminder to track unified task tool

* refactor(tools): register unified task tool, remove 4 separate tools

* chore(cleanup): remove old 4-tool task implementation

* refactor(config): use new_task_system_enabled as top-level flag

- Add new_task_system_enabled to OhMyOpenCodeConfigSchema
- Remove enabled from SisyphusTasksConfigSchema (keep storage_path, claude_code_compat)
- Update index.ts to gate on new_task_system_enabled
- Update plugin-config.ts default for config initialization
- Update test configs in task.test.ts and storage.test.ts

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

* fix: resolve typecheck and test failures

- Add explicit ToolDefinition return type to createTask function
- Fix planDemoteConfig to use 'subagent' mode instead of 'all'

---------

Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-02-01 22:42:28 +09:00
YeonGyu-Kim 64825158a7 feat(agents): add Hephaestus - autonomous deep worker agent (#1287)
* refactor(keyword-detector): split constants into domain-specific modules

* feat(shared): add requiresAnyModel and isAnyFallbackModelAvailable

* feat(config): add hephaestus to agent schemas

* feat(agents): add Hephaestus autonomous deep worker

* feat(cli): update model-fallback for hephaestus support

* feat(plugin): add hephaestus to config handler with ordering

* test(delegate-task): update tests for hephaestus agent

* docs: update AGENTS.md files for hephaestus

* docs: add hephaestus to READMEs

* chore: regenerate config schema

* fix(delegate-task): bypass requiresModel check when user provides explicit config

* docs(hephaestus): add 4-part context structure for explore/librarian prompts

* docs: fix review comments from cubic (non-breaking changes)

- Move Hephaestus from Primary Agents to Subagents (uses own fallback chain)
- Fix Hephaestus fallback chain documentation (claude-opus-4-5 → gemini-3-pro)
- Add settings.local.json to claude-code-hooks config sources
- Fix delegate_task parameters in ultrawork prompt (agent→subagent_type, background→run_in_background, add load_skills)
- Update line counts in AGENTS.md (index.ts: 788, manager.ts: 1440)

* docs: fix additional documentation inconsistencies from oracle review

- Fix delegate_task parameters in Background Agents example (docs/features.md)
- Fix Hephaestus fallback chain in root AGENTS.md to match model-requirements.ts

* docs: clarify Hephaestus has no fallback (requires gpt-5.2-codex only)

Hephaestus uses requiresModel constraint - it only activates when gpt-5.2-codex
is available. The fallback chain in code is unreachable, so documentation
should not mention fallbacks.

* fix(hephaestus): remove unreachable fallback chain entries

Hephaestus has requiresModel: gpt-5.2-codex which means the agent only
activates when that specific model is available. The fallback entries
(claude-opus-4-5, gemini-3-pro) were unreachable and misleading.

---------

Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>
2026-02-01 19:26:57 +09:00
itsmylife44 6389da3cd6 fix(tmux): send Ctrl+C before kill-pane and respawn-pane to prevent orphaned processes (#1329)
* fix(tmux): send Ctrl+C before kill-pane and respawn-pane to prevent orphaned processes

* fix(tmux-subagent): prevent premature pane closure with stability detection

Implements stability detection pattern from background-agent to prevent
tmux panes from closing while agents are still working (issue #1330).

Problem: Session status 'idle' doesn't mean 'finished' - agent may still
be thinking/reasoning. Previous code closed panes immediately on idle.

Solution:
- Require MIN_STABILITY_TIME_MS (10s) before stability detection activates
- Track message count changes to detect ongoing activity
- Require STABLE_POLLS_REQUIRED (3) consecutive polls with same message count
- Double-check session status before closing

Changes:
- types.ts: Add lastMessageCount and stableIdlePolls to TrackedSession
- manager.ts: Implement stability detection in pollSessions()
- manager.test.ts: Add 4 tests for stability detection behavior

* test(tmux-subagent): improve stability detection tests to properly verify age gate

- First test now sets session age >10s and verifies 3 polls don't close
- Last test now does 5 polls to prove age gate prevents closure
- Added comments explaining what each poll does
2026-02-01 19:11:35 +09:00