fix(chat): auto-deny ExitPlanMode when user sends free-text from chat…

… input

Previously, when the channel was parked on an ExitPlanMode card and the user
typed a new message and hit Send instead of clicking Approve/Reject/Request
changes, `onDismissCards()` cleared `exitPlanRequest` locally but never
called `POST /api/channels/{id}/plan/resolve`. The backend stayed in
`plannedChannels`, the drain loop bailed at the `IsChannelPlanned` guard,
and all queued messages sat unprocessed — the chat looked frozen.

Route the send through `resolvePlan(channelId, "deny", content, mode)` when
the card is active, mirroring the existing `pendingGateReqId` pattern. The
deny path inserts the user's text as a priority-bumped continuation, clears
the park flag, and resumes the drain.

docs: document Docker Agent session modes, Shift+Enter, and external …

…link routing

fix(orchestrator): guard prepareAgentRequest against deleted channel

GetChannel returns (nil, nil) when the row is missing (sql.ErrNoRows).
prepareAgentRequest only checked err, so a triggered message whose
channel was deleted mid-flight panicked on `channel.ParentID`. Drop
the redundant `channel != nil` check on the worktree branch now that
nil is rejected at the top.

Hit intermittently in CI: when the test-runner container fails to
build the agent image (no docker in PATH), the resulting partial state
left a triggered row whose channel had already been swept, and the
next drain crashed the daemon before any BDD scenario could connect.

fix(chat): hide 'Compacted context' marker while compacting is in flight

The agent.activity event fires once when compacting starts, but the FE was
immediately appending a kind=compacting timeline item — rendering the
past-tense "Compacted context" stamp above the still-active "Compacting
context..." indicator. Suppress the trailing marker while
agentActivity.activity === "compacting"; it reappears once the activity
transitions away.

test: fix cross-platform paths in dockerproxy and githubapi suites (#27)

On macOS sockaddr_un.sun_path caps unix socket paths at 104 bytes, so
t.TempDir() under /var/folders/... routinely fails `bind: invalid
argument`. Add a `shortSockPath` helper in server_test.go that allocates
under /tmp via os.MkdirTemp and use it across server/app/hijack tests.

The githubapi exec-runner tests hardcoded `/bin/true` and `/bin/false`,
which don't exist on macOS (the binaries live under /usr/bin). Resolve
them via exec.LookPath and skip if absent.

feat(scheduler): reset stale running tasks on daemon startup

The defer-based release in executeAndLog doesn't fire if the daemon is
killed (OOM, SIGKILL, crash), leaving rows flagged running=1 and orphaned
task_run_logs in 'running' state — both permanently invisible to
GetDueTasks until manually fixed. Run a one-shot sweep before the poll
loop starts to finalize orphan logs and clear stuck running flags.

feat(header): show channel/thread ID with label next to dir path (#22)

* feat(header): show channel/thread ID with label next to dir path

Adds a labeled "Channel ID:" / "Thread ID:" segment between the dir path
and session info in ChannelHeaderInfo, following the same separator and
double-click-to-copy pattern as the surrounding fields. The label
disambiguates threads (which have parent_id set) from channels.

* fix(header): scope ID double-click selection to the ID only

Move the onDoubleClick / title handlers off the label so the visual
selection no longer covers "Channel ID:" / "Thread ID:" text. The
highlighted region now matches the clipboard contents (just the id).

* feat(header): replace ID label with #/thread-icon prefix

Drop the verbose "Channel ID:" / "Thread ID:" prefix in favor of a `#`
glyph for channels and a chat-bubble icon for threads, mirroring the
Slack/Discord convention. Tooltip and double-click-to-copy behavior
unchanged.

* feat(header): add Claude icon before session, git-commit icon before commit