oh-my-opencode/AGENTS.md

oh-my-opencode — OpenCode Plugin

HOLD THE FUCK UP. THIS ENTIRE GODDAMN CODEBASE IS BEING RIPPED APART AND REBUILT RIGHT NOW. A MASSIVE MULTI-HARNESS AGENT OS REFACTOR IS IN PROGRESS — WE ARE RESTRUCTURING EVERYTHING TO SUPPORT MULTIPLE AGENT HARNESSES (OPENCODE, CODEX, PI, AND OTHERS). DO NOT TRUST THE STRUCTURE BELOW AS STABLE. READ THE ROADMAP BEFORE YOU TOUCH ANYTHING OR SO HELP ME GOD.

Generated: 2026-05-20 | Commit: 39aadbf9f | Branch: dev | Release: v4.2.0

OVERVIEW

OpenCode plugin (npm: oh-my-opencode, dual-published as oh-my-openagent during the rename transition) extending OpenCode with 11 agents, 54–61 lifecycle hooks (base / +team-mode) across 57 dirs, 20–39 tools (gated by config flags including team-mode), 3-tier MCP system (built-in + .mcp.json + skill-embedded), Hashline LINE#ID edit tool, IntentGate keyword detector, Team Mode (parallel multi-agent coordination, OFF by default), Boulder feature (boulder-state work tracking + cli/boulder subcommand), configurable agent ordering, and Claude Code compatibility. Repository contains ~2167 TypeScript files across src/, script/, test-support/, and packages/web/, ~313k LOC; src/ itself has 120 barrel index.ts files. Entry: src/index.ts is an 18-line wrapper that delegates to src/testing/create-plugin-module.ts createPluginModule() → 7-step init.

STRUCTURE

oh-my-opencode/
├── src/
│   ├── index.ts              # Plugin entry; thin wrapper that re-exports `createPluginModule()` from `src/testing/`
│   ├── plugin-config.ts      # JSONC multi-level config: user → project → defaults (Zod v4)
│   ├── plugin-interface.ts   # 11 OpenCode hook handlers (+2 wired in src/testing/create-plugin-module.ts)
│   ├── create-managers.ts    # 4 managers (Tmux, Background, SkillMcp, ConfigHandler)
│   ├── create-tools.ts       # ToolRegistry composition
│   ├── create-hooks.ts       # 5-tier hook composition
│   ├── agents/               # 11 agents (Sisyphus, Hephaestus, Oracle, Librarian, Explore, Atlas, Prometheus, Metis, Momus, Multimodal-Looker, Sisyphus-Junior)
│   ├── hooks/                # ~52 lifecycle hooks across 57 dirs (incl. 5 zauc-mocks + 1 shared + 1 `.sisyphus/` legacy state + 1 `team-session-events/`; 2 unwired WIP: `task-reminder/`, `hashline-edit-diff-enhancer/`)
│   ├── tools/                # 13 native tool dirs; LSP + AST-grep now served via built-in MCPs
│   ├── features/             # 20 feature modules (incl. team-mode, background-agent, skill-mcp-manager, opencode-skill-loader, tmux-subagent, mcp-oauth, claude-code-plugin-loader, boulder-state, etc.)
│   ├── shared/               # 297 utility files (179 non-test); logger → oh-my-opencode.log in os.tmpdir() (50 MB cap, .1/.2 backups)
│   ├── config/               # Zod v4 schema system (30 schema files)
│   ├── cli/                  # CLI: install, run, doctor, mcp-oauth, refresh-model-capabilities, get-local-version, boulder
│   ├── mcp/                  # 5 built-in MCPs (3 remote + local stdio lsp + ast_grep)
│   ├── plugin/               # 11 OpenCode hook handlers + 5-tier hook composition
│   ├── plugin-handlers/      # 6-phase config loading pipeline
│   ├── openclaw/             # Bidirectional external integration (Discord/Telegram/HTTP/shell + reply listener daemon)
│   ├── generated/            # model-capabilities.generated.json (refreshed via build:model-capabilities)
│   └── testing/              # Test utilities + `create-plugin-module.ts` (extracted plugin entry factory, 182 LOC)
├── packages/                 # 11 platform-specific binary packages + lsp-tools-mcp submodule + ast-grep-mcp + rules-core + web
│   └── web/                  # Marketing site (Next.js 15 + Cloudflare Workers). Independent package with own bun.lock
├── bin/                      # Platform-detection JS shim (oh-my-opencode + oh-my-openagent)
├── script/                   # Build/publish automation (singular, not scripts/)
├── docs/                     # User-facing docs (guide/, reference/, examples/, legal/, manifesto.md, superpowers/, troubleshooting/)
├── assets/                   # oh-my-opencode.schema.json (auto-generated from Zod)
├── signatures/               # CLA signature registry (cla.json)
├── postinstall.mjs           # Verifies platform binary + OpenCode version
├── test-setup.ts             # Bun test preload (resets state between tests)
├── bun-test.d.ts             # Custom bun:test type augmentations
├── .opencode/                # Project-scope skills + commands (skills/, command/) + background-tasks state
├── .agents/                  # Mirrored project-scope skills + commands (recent migration target)
├── .omo/                # AI agent workspace (run-continuation/, plans/, tasks/, notepads/)
└── .local-ignore/            # Dev-only test fixtures + PR worktrees

INITIALIZATION FLOW

pluginModule.server(input, options)
  ├─→ installAgentSortShim()       # patches Array.prototype.{toSorted,sort} for canonical agent ordering
  ├─→ initConfigContext()          # opencode-vs-openagent layout flag
  ├─→ detectExternalSkillPlugin()  # warn on conflicts
  ├─→ injectServerAuthIntoClient() # auth headers into shared SDK client
  ├─→ loadPluginConfig()           # JSONC parse → user/project merge → Zod validate → migrate
  ├─→ initializeOpenClaw()         # if openclaw config present
  ├─→ checkTeamModeDependencies()  # if team_mode.enabled
  ├─→ createManagers()             # TmuxSessionManager, BackgroundManager, SkillMcpManager, ConfigHandler
  ├─→ createTools()                # SkillContext + AvailableCategories + ToolRegistry
  ├─→ createHooks()                # 5-tier: Session + ToolGuard + Transform + Continuation + Skill
  └─→ createPluginInterface()      # 11 OpenCode hook handlers → PluginInterface

13 OPENCODE HOOK HANDLERS

11 wired in src/plugin-interface.ts + 2 wired directly in src/testing/create-plugin-module.ts (experimental.session.compacting + experimental.compaction.autocontinue).

Handler	OpenCode Hook	Purpose
config	config	6-phase pipeline: provider → plugin-components → agents → tools → MCPs → commands
tool	tool	20–39 registered tools (config-gated: team-mode +12, task system +4, hashline +1, interactive_bash +1, look_at +1)
chat.message	chat.message	First-message variant, session setup, keyword detection (ultrawork/search/analyze/team)
chat.params	chat.params	Anthropic effort, think mode, runtime fallback override
chat.headers	chat.headers	Copilot x-initiator header injection
command.execute.before	command.execute.before	Pre-command guards (slash-command interception, etc.)
event	event	Session lifecycle (created/deleted/idle/error), openclaw dispatch, runtime fallback
tool.execute.before	tool.execute.before	Pre-tool guards (write-existing-guard, label-truncator, rules-injector, prometheus-md-only, …)
tool.execute.after	tool.execute.after	Post-tool hooks (output truncator, comment-checker, hashline read-enhancer, json-error-recovery, …)
experimental.chat.messages.transform	experimental.chat.messages.transform	Context injection, thinking-block validation, tool-pair validation, keyword detection
experimental.chat.system.transform	experimental.chat.system.transform	System-message-level transforms
experimental.session.compacting	experimental.session.compacting	Context + todo preservation across compaction
experimental.compaction.autocontinue	experimental.compaction.autocontinue	Auto-resume after compaction completes

TOOL CATALOG (config-gated)

Always on (20): lsp_goto_definition, lsp_find_references, lsp_symbols, lsp_diagnostics, lsp_prepare_rename, lsp_rename, grep, glob, ast_grep_search, ast_grep_replace, session_list, session_read, session_search, session_info, background_output, background_cancel, call_omo_agent, task (delegate), skill, skill_mcp.

Note: lsp_* and ast_grep_* tool names are now served by built-in MCP servers (lsp via packages/lsp-tools-mcp, ast_grep via packages/ast-grep-mcp), preserving existing names through OpenCode MCP namespacing.

Conditional: look_at (+1, multimodal-looker not disabled), interactive_bash (+1, tmux binary available on PATH via isInteractiveBashEnabled()), task_create/task_get/task_list/task_update (+4, experimental.task_system), edit (+1, hashline_edit), team_create/team_delete/team_shutdown_request/team_approve_shutdown/team_reject_shutdown/team_send_message/team_task_create/team_task_list/team_task_update/team_task_get/team_status/team_list (+12, team_mode.enabled).

TEAM MODE

OFF by default. Parallel multi-agent coordination, modeled after Claude Code Agent Teams. Enable via team_mode.enabled in .opencode/oh-my-opencode.jsonc or user config; restart OpenCode after change.

Full schema in src/config/schema/team-mode.ts (11 fields):

{
  "team_mode": {
    "enabled": true,
    "tmux_visualization": false,
    "max_parallel_members": 4,            // 1..8
    "max_members": 8,                     // 1..8 hard cap
    "max_messages_per_run": 10000,
    "max_wall_clock_minutes": 120,
    "max_member_turns": 500,
    "base_dir": null,                     // override default ~/.omo/teams or <project>/.omo/teams
    "message_payload_max_bytes": 32768,   // ≥1024
    "recipient_unread_max_bytes": 262144, // ≥1024
    "mailbox_poll_interval_ms": 3000      // ≥500
  }
}

Teams live as directories under ~/.omo/teams/{name}/config.json (user) or <project>/.omo/teams/{name}/config.json (project; project beats user on collisions). Members declared as kind: "subagent_type" (direct agent) or kind: "category" (routed through sisyphus-junior).

Member eligibility (from AGENT_ELIGIBILITY_REGISTRY):

• eligible: sisyphus, atlas, sisyphus-junior
• conditional: hephaestus (lacks teammate: "allow" permission by default — apply D-36 in tool-config-handler.ts or use subagent_type: "sisyphus" instead)
• hard-reject: oracle, librarian, explore, multimodal-looker, metis, momus, prometheus (rejected at parse — use task/delegate-task)

Storage layout (~/.omo/teams/{name}/): config.json (spec), state.json (runtime), mailbox/ (messages), tasklist.jsonl (tasks), worktrees/ (per-member git worktrees).

Implementation: src/features/team-mode/. User docs: docs/guide/team-mode.md.

MULTI-LEVEL CONFIG

Walked configs (closer wins): <pwd up to $HOME>/.opencode/oh-my-openagent.json[c]   (legacy: oh-my-opencode.json[c])
                            ↓ merged onto
User config:               ~/.config/opencode/oh-my-openagent.json[c]   (Windows: %APPDATA%\opencode\)
                            ↓ falls back to
Defaults                   (Zod safeParse fills omitted fields)

• agents, categories, claude_code: deep merged recursively (prototype-pollution safe)
• disabled_* arrays: Set union (concatenated + deduplicated)
• All other fields: override replaces base value
• mcp_env_allowlist: user-only for security; walked configs cannot extend it
• migrateConfigFile() rewrites legacy keys (idempotent via _migrations tracking + timestamped backups)

Schema autocomplete: "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-openagent/dev/assets/oh-my-opencode.schema.json"

THREE-TIER MCP SYSTEM

Tier	Source	Loader	Mechanism
1. Built-in	src/mcp/	createBuiltinMcps()	3 remote HTTP + 2 local stdio MCPs (lsp, ast_grep)
2. Claude Code	.mcp.json (project + user)	claude-code-mcp-loader	${VAR} env expansion (allowlist via mcp_env_allowlist)
3. Skill-embedded	SKILL.md YAML frontmatter	SkillMcpManager (per-session)	stdio + HTTP, OAuth 2.0 + PKCE + DCR step-up

WHERE TO LOOK

Task	Location	Notes
Add new agent	src/agents/ + src/agents/builtin-agents/	createXXXAgent factory + mode: "primary" | "subagent" | "all"
Add new hook	src/hooks/{name}/ + register in src/plugin/hooks/create-*-hooks.ts	Pick the right tier (Session/ToolGuard/Transform/Continuation/Skill)
Add new tool	src/tools/{name}/ + register in src/plugin/tool-registry.ts	Factory createXXXTool (most) or direct ToolDefinition (interactive_bash)
Add new feature module	src/features/{name}/	Standalone module wired into plugin/ layer
Add new MCP (tier 1)	src/mcp/ + register in createBuiltinMcps()	Remote HTTP or local stdio
Add new built-in skill	src/features/builtin-skills/skills/{name}.ts + register in skills.ts	Implement BuiltinSkill interface
Add new command	src/features/builtin-commands/	Templates in templates/
Add new CLI subcommand	src/cli/cli-program.ts	Commander.js subcommand
Add new doctor check	src/cli/doctor/checks/	Register in checks/index.ts
Modify config schema	src/config/schema/ + add to OhMyOpenCodeConfigSchema	Zod v4; auto-included in assets/oh-my-opencode.schema.json after bun run build:schema
Add new category	src/tools/delegate-task/constants.ts	DEFAULT_CATEGORIES + CATEGORY_MODEL_REQUIREMENTS
Add new team-mode tool	src/features/team-mode/tools/ + register in src/plugin/tool-registry.ts teamModeToolsRecord	Gated on team_mode.enabled
Reactive provider error recovery	src/hooks/runtime-fallback/	Distinct from model-fallback (proactive, chat.params)
External notifications	src/openclaw/	Bidirectional: outbound (event → HTTP/shell), inbound (Discord/Telegram daemon → tmux send-keys)
Skill-embedded MCP	src/features/skill-mcp-manager/	Tier-3 MCPs (per-session, stdio + HTTP)

ARCHITECTURE INVARIANTS

• Canonical agent order: Sisyphus → Hephaestus → Prometheus → Atlas. Enforced by installAgentSortShim() (patches Array.prototype.toSorted/.sort narrowly when the array contains ≥2 canonical core agents). See src/plugin-handlers/AGENTS.md for the full history of why this exists.
• Hashline edit + read pairing: Every Read tool output is tagged with LINE#ID content hashes; hashline_edit validates the hash before applying. Stale hash → reject.
• 5-tier hook composition: Session (24) + ToolGuard (16) + Transform (5) + Continuation (7) + Skill (2) = 54 base. With team_mode.enabled: +1 ToolGuard (team-tool-gating), +2 Transform (team-mode-status-injector, team-mailbox-injector), +4 direct event handlers in src/plugin/event.ts (team-session-events/*) = 61 total. Composed by createCoreHooks() + createContinuationHooks() + createSkillHooks().
• Per-session MCP isolation: Tier-3 MCP clients keyed by ${sessionID}:${skillName}:${serverName} so the same skill in two sessions does not share state.
• Two fallback systems: model-fallback (proactive, chat.params) vs runtime-fallback (reactive, session.error). They operate independently — no direct integration.
• OpenClaw bidirectional: Outbound dispatchers fire on session events; inbound daemon polls Discord/Telegram and send-keys replies into the tracked tmux pane.
• Internal message injection is dangerous: OpenCode의 stupid한 설계로 플러그인이 session.prompt / session.promptAsync 같은 메인 세션 메시지 API를 통해 메인 시스템을 망가뜨릴 수 있다.
  • Root cause to remember: OpenCode promptAsync returns before the prompt is durably accepted, and later failures can arrive as session.error. Multiple OMO hooks/tools can observe the same idle/error/completion edge and inject the same internal message into a live parent session.
• Treat every session.prompt / session.promptAsync call as a write to shared session state. Production code may call them only inside src/shared/prompt-async-gate.ts; all other routes must use dispatchInternalPrompt({ mode: "async" | "sync", ... }) or a proven equivalent gate.
  • Required gate semantics: reserve per session before dispatch, check active session state, keep a short post-dispatch hold, release only on intentional abort/recovery paths, and restore optimistic task/loop state when dispatch is skipped or fails later.
  • Forbidden patterns: raw prompt calls outside the shared gate, postDispatchHoldMs: 0, no-session fallback to raw prompt, and new internal message routes without duplicate-injection regression tests.
  • Tests must pin both the shared invariant and the route behavior: update the static raw-prompt audit, then add route-specific tests proving concurrent/live/idle/error triggers collapse to one dispatch. Cover background completion wakes, fallback retries, team mailbox live delivery, recovery continuations, CLI run resumes, Claude Code hook injections, and sync/background subagent prompts.

CONVENTIONS

• Runtime: Bun only (1.3.12 in CI). Never npm/yarn/pnpm.
• TypeScript: strict mode, ESNext, bundler moduleResolution, bun-types (never @types/node).
• Tests: Bun test (bun:test), co-located *.test.ts, given/when/then style — nested describe with #given/#when/#then prefixes, or inline // given / // when / // then comments. Never Arrange-Act-Assert comments.
• CI tests: plain bun test runs the root Bun suite in one process; no sharding or split isolation runner.
• Test setup: test-setup.ts preloaded via bunfig.toml resets session/cache state between tests.
• Factory pattern: createXXX() for all tools, hooks, agents.
• File naming: kebab-case for files and directories.
• Module structure: index.ts barrel exports, no catch-all files (utils.ts, helpers.ts, service.ts banned), 200 LOC soft limit per file.
• Imports: relative within a module, barrel imports across modules (import { log } from "./shared"). No path aliases in src/ — never @/. packages/web/ is the only exception: it uses @/* (Next.js convention) and has its own tsconfig.
• Config format: JSONC with comments + trailing commas, Zod v4 validation, snake_case keys.
• Dual package: oh-my-opencode + oh-my-openagent published simultaneously during the rename transition.
• Comments: AI slop comment patterns blocked by comment-checker hook (binary: @code-yeongyu/comment-checker). Use // @allow to bypass single line, // comment-checker-disable-file at file top to bypass file. Sparingly.

ANTI-PATTERNS (BLOCKING)

• Never as any, @ts-ignore, @ts-expect-error.
• Never suppress lint/type errors.
• Never add emojis to code/comments unless user explicitly asks.
• Never commit unless explicitly requested.
• Never run bun publish directly — use the GitHub Actions workflow.
• Never modify package.json version locally — handled by publish workflow.
• Never write to existing files without reading them first (write-existing-file-guard).
• Never use background_cancel(all=true) — cancel by taskId individually.
• Never delete a failing test to make a build green. Fix the code.
• Never em dashes / en dashes / AI filler ("simply", "obviously", "clearly", "moreover", "furthermore") in generated content.
• Never create catch-all files (utils.ts, helpers.ts, service.ts).
• Never empty catch blocks catch(e) {}.
• Never test with Arrange-Act-Assert comments — use given/when/then.
• Never dump business logic into index.ts — barrel exports only.
• Prometheus may ONLY edit .md files (enforced by prometheus-md-only hook); FORBIDDEN paths: src/, package.json, config files.

COMMANDS

bun test                          # Root Bun test suite in one process
bun run build                     # Build plugin (ESM bundle + .d.ts + cli bundle + schema generation)
bun run build:all                 # Build + 11 platform binaries
bun run build:schema              # Regenerate assets/oh-my-opencode.schema.json
bun run build:model-capabilities  # Refresh shared/model-capabilities cache from models.dev
bun run typecheck                 # tsgo --noEmit (uses @typescript/native-preview, NOT tsc)
bun run clean                     # rm -rf dist
bunx oh-my-opencode install       # Interactive setup wizard
bunx oh-my-opencode doctor        # Health diagnostics (4 categories: System / Config / Tools / Models)
bunx oh-my-opencode run <message> # Non-interactive session (auto-completes when todos done + no bg tasks)
bunx oh-my-opencode mcp-oauth login <server-url>  # Tier-3 MCP OAuth (PKCE + DCR)

CI/CD

Workflow	Trigger	Purpose
ci.yml	push/PR to master/dev	Tests, typecheck, build, auto-commit schema on master push, draft "next" release on dev push (blocks master-targeting PRs)
publish.yml	manual dispatch	Test, typecheck, preflight-trust (OIDC verify 24 packages), dual npm publish (oh-my-opencode + oh-my-openagent), platform binaries, GitHub release, merge to master
publish-platform.yml	called by publish.yml	11 platform binaries via bun compile (darwin/linux/windows)
sisyphus-agent.yml	@mention or manual dispatch	AI agent handles issues/PRs
refresh-model-capabilities.yml	weekly cron / dispatch	Refresh model capabilities from models.dev API
cla.yml	issue_comment / PR	CLA assistant for contributors
lint-workflows.yml	push/PR touching .github/workflows/**	actionlint only (shellcheck="" disables shellcheck)
web-ci.yml	push/PR to master/dev touching packages/web/**, docs/**, or the workflow file itself	format-check, lint, type-check, next build, opennextjs-cloudflare build
web-deploy.yml	push to master/dev touching packages/web/**, docs/**, or the workflow file itself, OR manual dispatch	Cloudflare Workers deploy via cloudflare/wrangler-action@v3 (requires CLOUDFLARE_API_TOKEN + CLOUDFLARE_ACCOUNT_ID secrets)

PR MERGE POLICY

• PRs into dev MUST use merge commits.
• Use gh pr merge <number> --merge --delete-branch after CI, review-work, and Cubic pass.
• NEVER squash merge or rebase merge PRs in this repository, even if a generic workflow, skill, or GitHub default suggests it.
• If another instruction says --squash or --rebase, this repo-level rule overrides it.

NOTES

• Logger: writes oh-my-opencode.log to the OS temp dir (/tmp on Linux, /var/folders/.../T/ on macOS, %TEMP% on Windows — i.e. Node's os.tmpdir()). Rotated at 50 MB; previous segments live at .1 and .2 (oldest dropped).
• Background tasks: 5 concurrent per ${providerID}/${modelID} key by default (configurable via background_task.modelConcurrency / providerConcurrency); FIFO queue when slots full.
• Plugin load timeout: 10s for Claude Code plugin discovery.
• Model fallback: per-agent chains in src/shared/model-requirements.ts. There is no single global priority.
• Two fallback systems: model-fallback (proactive, chat.params, hardcoded chains) vs runtime-fallback (reactive, session.error, configurable per-category/agent).
• Config migration: idempotent via _migrations tracking, atomic writes with timestamped backups.
• Build: bun build (ESM) + tsc --emitDeclarationOnly, externals: @ast-grep/napi, zod.
• CI tests: root tests run through plain bun test; packages/web/** has its own package-level CI workflow.
• 120 barrel index.ts files establish module boundaries.
• Architecture rules enforced via the rules-injector hook reading .omo/rules/*.md. As of v4.2.0 only test-discipline.md ships; legacy modular-code-enforcement.md was retired.
• Windows builds: run on windows-latest (not cross-compiled) to avoid Bun segfaults.
• Platform binaries: detect AVX2 + libc family at runtime, fallback to baseline if needed.
• IntentGate (keyword-detector): classifies user intent (ultrawork/ulw, search, analyze, team) and injects mode-specific prompts.
• Hashline edit: every Read output tagged with LINE#ID content hashes (chars from ZPMQVRWSNKTXJBYH); edits reject on hash mismatch.
• zauc-mocks pattern: 9 directories named zauc-mocks-* (5 in src/hooks/, 2 in src/tools/, 1 each in src/mcp/ and src/shared/) hold mock.module() setup that must load alphabetically before the tests that consume those mocked modules. The zauc- prefix is purely a sort-order hack for bun:test discovery; these are NOT hooks/tools.
• Test discipline meta-audits: two files (src/shared/mock-module-lifecycle-audit.test.ts and src/shared/prompt-async-route-audit.test.ts) parse the entire codebase via the TS compiler API and FAIL the suite when an architectural invariant is violated (mock.module() without restore, raw session.promptAsync outside the gate).
• Docs: see docs/guide/ for user-facing guides (overview, installation, orchestration, agent-model-matching, team-mode), docs/reference/ for CLI/configuration/features reference. v4.2.0+ adds CHANGELOG.md, docs/reference/known-issues.md, docs/reference/prompt-async-gate-rfc.md, and docs/reference/release-process.md.
• Rules files (auto-injected by rules-injector hook): .omo/rules/modular-code-enforcement.md + .omo/rules/test-discipline.md (forbids setTimeout(resolve, N) / await sleep(N) in tests unless time IS the SUT). Scans .omo/rules/, .claude/rules/, .cursor/rules/, .github/instructions/, plus .github/copilot-instructions.md and .mdc files.
• Process cleanup: Background-agent error handlers are now log-only — no force-exit on transient errors. Opt out entirely via OMO_DISABLE_PROCESS_CLEANUP=1 env var.
• First-prompt watchdog: src/hooks/runtime-fallback/first-prompt-watchdog.ts (206 LOC) detects subagent sessions producing no progress within 90s and triggers fallback / abort.
• ParentWakeNotifier: Background-agent parent-wake state extracted to src/features/background-agent/parent-wake-notifier.ts (587 LOC) with dependency-injected client and enqueue callback.
• Workspace migration: Runtime state migrated from .sisyphus/ → .omo/. Legacy .sisyphus/ still exists during transition; src/shared/legacy-workspace-migration.ts copies it forward on first load.
• CI nuance: PRs targeting master are hard-blocked — they MUST target dev. CI auto-commits schema changes on master push and creates a draft "next" release on dev push.