feat: codeman tui, a terminal dashboard with live agent states

.gitignore

@@ -93,8 +93,6 @@ packages/gesture-control/.vite/
 # Claude Code plan tracking
 plan.json
 
-# Unfinished TUI (local development only)
-src/tui/
 .claude/
 media-assets/
 commands

CLAUDE.md

@@ -94,6 +94,7 @@ Codeman is a Claude Code session manager with web interface and autonomous Ralph
 
 | Task                           | Command                                                                                                                                                                                                        |
 | ------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| Terminal dashboard             | `codeman tui` (`--list` prints the numbered list and exits, `codeman tui <n>` attaches to row n; both short-circuit before any screen setup). Needs a TTY; without a server it starts attach-only. `docs/tui.md` |
 | Dev with TLS                   | `npx tsx src/index.ts web --https`                                                                                                                                                                             |
 | Override window title hostname | `npx tsx src/index.ts web --title-hostname <name>` (default: `os.hostname()` — `codeman:<name>` is used for tab title, title-flash, and OS desktop notification prefix)                                        |
 | Bind a non-loopback host       | `npx tsx src/index.ts web --host 0.0.0.0` (or `-H`; env `CODEMAN_HOST`; default `127.0.0.1`). Without `CODEMAN_PASSWORD` it **starts but warns loudly** — see Common Gotchas + `docs/security-architecture.md` |
@@ -131,7 +132,7 @@ Codeman is a Claude Code session manager with web interface and autonomous Ralph
 - **Zod `.optional()` rejects `null`** — accepts `undefined` only. When the frontend builds a request body with `JSON.stringify`, an explicit `null` field is preserved on the wire and fails validation with `INVALID_INPUT`. Convert `null` → `undefined` before stringifying (e.g. `field: value ?? undefined`), or declare the schema `.nullish()`. This has caused real shipped bugs twice
 - **`xterm-zerolag-input` is single-source** — BOTH echo addons live ONLY in `packages/xterm-zerolag-input/src/`, bundled into TWO **gitignored** vendor files: `vendor/xterm-zerolag-input.js` (buffer overlay, entry `zerolag-input-addon.ts`) and `vendor/xterm-predictive-echo.js` (codex write-through, entry `predictive-echo-addon.ts`) — dev by `scripts/postinstall.js`, prod by `scripts/build.mjs`. `app.js`/terminal-ui.js only **consume** them via `new LocalEchoOverlay(terminal)` / `new PredictiveEchoOverlay(terminal)`; there is no inline copy. So: change the package source, then rerun the bundle step (`npm install` for dev, `npm run build` for prod). **Never hand-edit `app.js` for overlay behavior, and never commit the gitignored vendor bundles.** Always test on mobile after touching it. → [architecture-invariants#xterm-zerolag-input-is-single-source](docs/architecture-invariants.md#xterm-zerolag-input-is-single-source), `docs/local-echo-overlay-plan.md`
 - **Default bind is loopback-only; non-loopback without a password starts but warns** — the server defaults to `--host 127.0.0.1`. Binding non-loopback (`--host`/`-H`/`CODEMAN_HOST`) without `CODEMAN_PASSWORD` starts anyway but prints a loud warning; `--allow-unauthenticated-network` / `CODEMAN_ALLOW_UNAUTHENTICATED_NETWORK=1` acknowledges it. ⚠️ The production systemd unit passes no `--host`, so prod binds **localhost only**: reach it via `tailscale serve`/tunnel to `127.0.0.1`. A loopback bind is reachable through a same-host tunnel but NOT by a browser hitting the box's LAN IP. `install.sh` is separate and prompts for the binding (defaulting to LAN + a password), and preserves the existing binding on re-runs. → [architecture-invariants#default-bind-and-the-non-loopback-warning-path](docs/architecture-invariants.md#default-bind-and-the-non-loopback-warning-path), `docs/security-architecture.md`
-- **Instance isolation / multi-instance attach danger** — the data dir (`~/.codeman`) and tmux socket (`tmux -L codeman`) are PROCESS-WIDE and shared by every Codeman on the machine, derived from `CODEMAN_INSTANCE` via `src/config/instance.ts`. ⚠️ A 2nd instance on the SAME socket **discovers and attaches PTYs to the first instance's live sessions**, resizing and mutating them. `$HOME` isolation is NOT enough because tmux is system-global. To run two instances, give each a distinct `CODEMAN_INSTANCE` (scopes dir + socket together), or set `CODEMAN_TMUX_SOCKET` + `CODEMAN_DATA_DIR` individually; `scripts/run-beta.sh` does this for a beta alongside prod. **Any new `~/.codeman/...` path MUST go through `dataPath()`**, never `join(homedir(), '.codeman', …)`. → [architecture-invariants#instance-isolation-and-the-multi-instance-attach-danger](docs/architecture-invariants.md#instance-isolation-and-the-multi-instance-attach-danger)
+- **Instance isolation / multi-instance attach danger** — the data dir (`~/.codeman`) and tmux socket (`tmux -L codeman`) are PROCESS-WIDE and shared by every Codeman on the machine, derived from `CODEMAN_INSTANCE` via `src/config/instance.ts`. ⚠️ A 2nd instance on the SAME socket **discovers and attaches PTYs to the first instance's live sessions**, resizing and mutating them. `$HOME` isolation is NOT enough because tmux is system-global. To run two instances, give each a distinct `CODEMAN_INSTANCE` (scopes dir + socket together), or set `CODEMAN_TMUX_SOCKET` + `CODEMAN_DATA_DIR` individually; `scripts/run-beta.sh` does this for a beta alongside prod. **Any new `~/.codeman/...` path MUST go through `dataPath()`**, never `join(homedir(), '.codeman', …)`, and **any new `tmux -L` caller through `resolveTmuxSocketName()`** (both in `config/instance.ts`): the TUI shells out to tmux from a second process, and a hardcoded `codeman` there would point a beta instance at prod's panes. → [architecture-invariants#instance-isolation-and-the-multi-instance-attach-danger](docs/architecture-invariants.md#instance-isolation-and-the-multi-instance-attach-danger)
 - **node-pty's macOS `spawn-helper` ships without `+x`** (issues #6, #204): `node-pty@1.1.0` publishes `prebuilds/darwin-<arch>/spawn-helper` as mode 0644, and macOS launches every PTY through it, so a stock macOS install fails every session start with `Error: posix_spawnp failed.` **Linux can never reproduce it**: `spawn-helper` is an `OS=="mac"` gyp target and node-pty ships no Linux prebuild, so node-gyp always emits an executable helper there. ⚠️ Look in **`prebuilds/<platform>-<arch>/`**, not just `build/Release/`, which does not exist on macOS. Repair is a chmod, never a mandatory rebuild (that would require Xcode CLI tools and deletes `prebuilds/` before compiling): `npm run fix:node-pty` chmods every helper then proves it by really opening a PTY. `spawnPtyWithHelperRepair()` (`utils/node-pty-repair.ts`) wraps every `pty.spawn()` in `session.ts` and self-heals a broken install on the first failure. → [architecture-invariants#node-ptys-macos-spawn-helper-must-be-executable](docs/architecture-invariants.md#node-ptys-macos-spawn-helper-must-be-executable)
 - **Headless screenshots: `deviceScaleFactor` MUST be 1, and write unique filenames** — under DSF=2 xterm's WebGL renderer draws glyphs at ~2× nominal size while still *reporting* nominal cell dims, so only the pixels reveal it and only the terminal font looks wrong. And overwriting a fixed output path leaves OS image viewers showing the old render, which reads as "the fix didn't work"; `scripts/capture-real-overview.mjs` mints a timestamped filename per run. Seed the per-device `localStorage` keys (`codeman:skin`, `codeman-font-size`, `codeman-app-settings`) so the capture matches a real device. → [architecture-invariants#headless-screenshot-capture](docs/architecture-invariants.md#headless-screenshot-capture)
 
@@ -143,7 +144,8 @@ Codeman is a Claude Code session manager with web interface and autonomous Ralph
 
 | Domain           | Key files                                                                                              | Notes                                                                                            |
 | ---------------- | -------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- |
-| **Entry**        | `src/index.ts`, `src/cli.ts`, `daemon-control`, `service-installer`, `config/service-names`             | The last three back `web -d` / `service install`                                                 |
+| **Entry**        | `src/index.ts`, `src/cli.ts`, `daemon-control`, `service-installer`, `config/service-names`, `cli-style` | The last three back `web -d` / `service install`; `cli-style` is the shared palette/table/spinner/confirm kit |
+| **TUI**          | `src/tui/`: `tui-app` ★ + `tui-client` (the only IO) over a pure core (`-model`, `-layout`, `-render`, `-keys`, `-ansi`, `-composer`, `-approvals`, `-digest`, `-sse`, `-types`) | `codeman tui`, a CLIENT of the server, never a second brain. Design doc: `docs/tui-plan.md`; user guide `docs/tui.md` |
 | **Session**      | `src/session.ts` ★, `session-manager`, `session-auto-ops`, `session-cli-builder`, `session-task-cache`, `session-order` (pure), `session-pty-exit-breaker`, `usage-limit-patterns`, `usage-telemetry`; `src/services/unified-session-service.ts` | Pure/unit-tested helpers are split out of `session.ts` on purpose                                 |
 | **Mux**          | `src/mux-interface.ts`, `src/mux-factory.ts`, `src/tmux-manager.ts` ★                                  |                                                                                                  |
 | **Respawn**      | `src/respawn-controller.ts` ★ + 4 helpers (`-adaptive-timing`, `-health`, `-metrics`, `-patterns`)      | Read `docs/respawn-state-machine.md` first                                                       |

README.md

@@ -658,6 +658,22 @@ These run for **every** request — before auth, even on the default no-password
 
 ---
 
+## Terminal UI (`codeman tui`)
+
+A full-screen dashboard for your sessions, in the terminal. Same states as the web UI, because it is a client of the same server:
+
+```bash
+codeman tui              # the dashboard
+codeman tui --list       # numbered session list, then exit (scriptable)
+codeman tui 2            # attach straight to session 2 of that list
+```
+
+Sessions are grouped **NEEDS YOU → WORKING → IDLE → RECENT**, longest-waiting first. `↑↓`/`j`/`k` select, `Enter` attaches into the tmux pane (`Ctrl+B D` to come back), `1`-`9` jump-attach. `y`/`n`/digit answer a pending permission dialog right from the list, `p` sends a one-line prompt, `n` starts a session, `x` kills one after a typed confirmation, `/` searches, `g` shows the away digest, `?` is help, `q` quits. Below 72 columns it drops the preview pane and becomes a single-column list, so it stays usable in Termius on a phone. With no server running it still starts in attach-only degraded mode.
+
+The web UI remains the primary surface; see **[docs/tui.md](docs/tui.md)** for the full guide.
+
+---
+
 ## SSH Alternative (`sc`)
 
 If you prefer SSH (Termius, Blink, etc.), the `sc` command is a thumb-friendly session chooser:
@@ -668,7 +684,7 @@ sc 2            # Quick attach to session 2
 sc -l           # List sessions
 ```
 
-Single-digit selection (1-9), color-coded status, token counts, auto-refresh. Detach with `Ctrl+A D`.
+Single-digit selection (1-9), color-coded status, token counts, auto-refresh. Detach with `Ctrl+B D` (tmux's default prefix, which Codeman does not change for local sessions).
 
 ---
 
@@ -893,7 +909,9 @@ codeman session start -d /path/to/repo   # (s)  start a session
 codeman session list                     #      list sessions
 codeman session logs <id>                #      tail output
 codeman task add "fix the failing test"  # (t)  queue a task
-codeman attach <path>                     #      attach a Claude hook context
+codeman attach <path>                    #      show an attachment card for a local file
+codeman tui --list                       #      numbered session list (plain text when piped)
+codeman tui 3                            #      attach to session 3 of that list
 ```
 
 ### Hooks (events flowing _back_ to Codeman)