Merge #650: jcode as a run mode

Conflict in skills/codeman/SKILL.md (and its plugin mirror): the list of
modes with neither stop nor blocked gained jcode here and the omp
exception from #798 on the release branch; both are kept.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>

docs/cli-registry.md

@@ -1,6 +1,6 @@
 # The CLI registry
 
-Every run mode Codeman can launch — Claude Code, Terminal/Shell, OpenCode, Codex, Gemini, Antigravity, Pi, Grok, DeepSeek Harness, OMP and GitHub Copilot CLI — is a `CliEntry`: a data record describing how to find the binary, how to build its command line, what environment it needs, and what it can do. Code that used to ask "which CLI is this?" asks the entry instead.
+Every run mode Codeman can launch — Claude Code, Terminal/Shell, OpenCode, Codex, Gemini, Antigravity, Pi, Grok, DeepSeek Harness, OMP, GitHub Copilot CLI and jcode — is a `CliEntry`: a data record describing how to find the binary, how to build its command line, what environment it needs, and what it can do. Code that used to ask "which CLI is this?" asks the entry instead.
 
 ## Where it lives
 
@@ -229,7 +229,9 @@ still reading. A caller that asked only for `idle` keeps getting `idle`.
 | --- | --- |
 | claude | `.claude/skills/codeman` |
 | codex, gemini, opencode, antigravity, grok, deepseek, omp | `.agents/skills/codeman` |
-| pi, shell | none |
+| pi, shell, jcode | none |
+
+jcode reads `.agents/skills` too, but it is left out (`agentSkillInjection: false`): its tools run in one shared per-user daemon with the CODEMAN_* identity of whichever session started it, so an injected skill would act as that session ([jcode-integration.md](jcode-integration.md#the-shared-daemon)).
 
 Measured 2026-10-11 against the installed builds or their source: every CLI in the middle row scans `<workspace>/.agents/skills/` (gemini only in its cwd, dsh only at the git root, else cwd), and Claude Code does not read it, so a case shared with a claude session lists the skill once there (opencode, grok and omp read both directories and see the same skill twice, identical, under one name). ⚠️ pi is left out on purpose: any project-level `.agents/skills` or `.pi/skills` makes pi ask "Trust project folder?" at startup, which would stall a spawned worker on a dialog; it reads the user-level `~/.agents/skills` without the prompt (`npx skills add Ark0N/Codeman --skill codeman -g`). A codex, gemini or other session's copy in a case that pi sessions also use triggers that prompt once for the human there. ⚠️ `agentSkillDir` is a closed enum (`AGENT_SKILL_DIRS`, schema.ts), never a free path: `clis.json` can set it and it decides where the server writes. ⚠️ Two codex traps the skill names rather than fixes: codex's default sandbox blocks network even to loopback (the skill needs **Bypass approvals and sandbox**), and codex 0.162 runs tool commands through a shared `app-server` daemon whose environment (`CODEMAN_SESSION_ID`, `CODEMAN_API_URL`) is that of the session that started it.
 
@@ -237,6 +239,10 @@ Measured 2026-10-11 against the installed builds or their source: every CLI in t
 
 `capabilities.newline` (`'line-feed'` | `'esc-enter'`, absent = line feed) is the byte sequence the `send-key` route types into the pane for Shift+Enter. A line feed (`0x0a`, also Ctrl+Enter) is what Claude Code's Ink input reads as "insert a newline"; `esc-enter` (`ESC CR`, the Option/Alt+Enter chord) is there for a composer that ignores a bare line feed. No stock CLI declares it today: the bytes are typed by tmux on the server, so the browser's OS cannot change what a CLI reads, and Codex 0.147.0 was checked to take a line feed (a Shift+Enter that submits is the keypress leak fixed in #520, not a byte problem). A user `clis.json` can set it for a CLI that needs it. It is an enum rather than a byte string on purpose: config never carries bytes that get typed into a pane. Settings → Terminal & Input → **Key tester** prints what a browser reports for keydown/keypress/keyup, to see whether a device is sending what you think.
 
+## A CLI with a shared daemon
+
+`capabilities.sharedDaemon: true` says the CLI's TUI is a client of one per-user daemon that its first client starts (in its own session and process group) and every later session shares. jcode is the one stock entry that declares it. A session kill normally signals every descendant of the pane by parent pid, and the daemon is still a descendant of the pane that started it, so closing that one tab cut every other session of the CLI off (measured with jcode). With the flag set, `killSession` signals only the descendants still in the pane's own process group (`descendantsInPaneGroup()` in `src/proc-tree.ts`, one bounded `ps -o pid=,pgid=` lookup; a lookup that fails keeps the full kill). `test/proc-walk-bounds.test.ts` pins that jcode alone declares it, so no other CLI's kill changes.
+
 ## Arg-template safety
 
 The composed command line is interpolated into `bash -c "…"` inside tmux, which makes command construction a security boundary. Four independent layers keep config out of it:
@@ -370,7 +376,7 @@ A module-level const freezes at first import, and the failure is asymmetric: a C
 
 ## MCP server sync
 
-`capabilities.mcpConfig` (`{ path, format, relocation? }`, `path` relative to the home directory) names the file a CLI keeps its user-level MCP server list in and the dialect it is written in. `src/mcp-sync.ts` reads that list from every ENABLED CLI that declares one, and that is installed or already has the file (a CLI that is neither is reported `absent`, never created), and adds any server a CLI is missing from the others. It writes other tools' own config, so it is **opt-in**: `mcpSyncEnabled` (synced, default OFF) gates `GET`/`POST /api/mcp-sync` (403 while off) and the Settings → Agents & CLIs → MCP servers controls. Declared today for claude, gemini, codex, opencode and antigravity (and GitHub Copilot CLI, below); every format was checked against what the CLI's own `mcp add` writes, except opencode's (documented, not installed to check). A CLI with no entry (pi, grok, omp, deepseek) is not guessed at: it is listed as `unsupported` in the result when enabled. Adding one is a registry entry plus a small adapter in `mcp-sync.ts`, and a verified fixture in `test/mcp-sync.test.ts`.
+`capabilities.mcpConfig` (`{ path, format, relocation? }`, `path` relative to the home directory) names the file a CLI keeps its user-level MCP server list in and the dialect it is written in. `src/mcp-sync.ts` reads that list from every ENABLED CLI that declares one, and that is installed or already has the file (a CLI that is neither is reported `absent`, never created), and adds any server a CLI is missing from the others. It writes other tools' own config, so it is **opt-in**: `mcpSyncEnabled` (synced, default OFF) gates `GET`/`POST /api/mcp-sync` (403 while off) and the Settings → Agents & CLIs → MCP servers controls. Declared today for claude, gemini, codex, opencode and antigravity (and GitHub Copilot CLI, below); every format was checked against what the CLI's own `mcp add` writes, except opencode's (documented, not installed to check). A CLI with no entry (pi, grok, omp, deepseek, jcode) is not guessed at: it is listed as `unsupported` in the result when enabled. Adding one is a registry entry plus a small adapter in `mcp-sync.ts`, and a verified fixture in `test/mcp-sync.test.ts`.
 
 **Tools that are not run modes, or that declare no `mcpConfig`.** `src/mcp-sync-targets.ts` declares such tools as plain data (`MCP_SYNC_ONLY_TOOLS`: id, label, config path, dialect, relocation var, the binary whose presence means "installed"). They join the registry CLIs as sync targets (listed after them, so a registry CLI's definition wins a same-name difference), under the same rules: installed or already configured, otherwise `absent`. GitHub Copilot CLI is both: its registry entry declares `mcpConfig`, so while the run mode is enabled the sync-only row is skipped, and it applies only if the run mode is disabled. Copilot's dialect is `copilot-json` (`~/.copilot/mcp-config.json`, relocated by `COPILOT_HOME`; checked against `copilot mcp add` 1.0.94): `mcpServers`, each entry with `tools` (`["*"]` = all), `type` `local` | `http` | `sse`, `command`/`args`/`env` or `url`/`headers`. `copilot mcp disable` does not mark the entry: it lists the name under `disabledMcpServers` in `settings.json` beside the config. Sync reads that list (never writes it) so a disabled server is not copied, and reports the target `unreadable` if `settings.json` is not valid JSON rather than guessing.