fix(lanes,reload): count a pipeline run by declarations, and stop the two reload commands merging

Closes #26, #25.

`runs` is the denominator every pass rate on the Workflows page is read
against, and any backwards move opened a new one. Stage detection bounces by
design — one feature reads `implement → tests → implement` as the session
edits, runs the suite and edits again — so a single feature was recorded as
five or six runs, and a lane in constant use reported a handful of passes
spread across dozens of phantom runs. A backwards move now opens a run only
when it is DECLARED; a backwards detection continues the run in flight.
Reaching the final node still closes the run for either, since work after
`done` is new work however it was observed. Replayed over this repo's own lane
the rule takes 26 recorded runs down to the 5 features that actually shipped
through it. The panel itself is unchanged: passes are still declarations only.

`/reload-plugins` and `/reload-skills` were typed back to back. Claude Code
opens its slash-command menu the moment `/` is typed and the Enter that follows
lands on that menu, so the second command was appended to the line still in the
composer and the pane submitted `/reload-plugins/reload-skills` — which Claude
Code runs as `/reload-plugins` with an argument, never reloading skills, and
leaving a stray prompt turn in the scrollback. Reproduced and fixed against a
live pane: SETTLE_MS (1s) between the two sends, which makes
`reloadOpenSessions` async rather than block the event loop, and the same pause
in the detached update-all worker.

docs/API.md

@@ -1677,7 +1677,7 @@ That indirection is structural, not stylistic: the plugin this dashboard *itself
 
 Batch `status` is `running`, `done`, `partial` (finished, at least one step failed), `failed`, or `abandoned`. `abandoned` is **derived, not stored**: the worker is detached, so a reboot leaves a `running` journal with nobody to finish it, and after an hour it is reported as abandoned so the button is usable again.
 
-`POST /api/cc-config/reload` is the reload step on its own. It types `/reload-plugins` and `/reload-skills` into the dashboard's live lane panes via `tmux send-keys`. **Both commands are scoped by Claude Code to the session that runs them** (`/reload-plugins` activates pending plugin changes "in the current session"; `/reload-skills` picks up skills changed on disk "during this session"), so nothing can reload a session from the outside — typing into a session that is already running is the only real mechanism, and it is what this does. It never spawns a `claude` process: a one-shot `claude -p "/reload-plugins"` would reload its own short-lived session, exit, and leave a junk session behind. Panes sitting at a shell prompt are skipped, since the text would run as a shell command instead; only `claude` lanes are addressed, as Codex has no equivalent. `lanes_total: 0` is a normal outcome, not an error. Sessions running outside the dashboard cannot be reached and must run the command themselves.
+`POST /api/cc-config/reload` is the reload step on its own. It types `/reload-plugins` and `/reload-skills` into the dashboard's live lane panes via `tmux send-keys`. **Both commands are scoped by Claude Code to the session that runs them** (`/reload-plugins` activates pending plugin changes "in the current session"; `/reload-skills` picks up skills changed on disk "during this session"), so nothing can reload a session from the outside — typing into a session that is already running is the only real mechanism, and it is what this does. It never spawns a `claude` process: a one-shot `claude -p "/reload-plugins"` would reload its own short-lived session, exit, and leave a junk session behind. Panes sitting at a shell prompt are skipped, since the text would run as a shell command instead; only `claude` lanes are addressed, as Codex has no equivalent. The two commands are typed **one second apart** (`SETTLE_MS` in `server/lib/cc-reload.js`), which is why the route takes about that long to answer: Claude Code opens its slash-command menu the moment `/` is typed and the Enter that follows lands on the menu, so back-to-back sends left both commands on one composer line and the pane submitted `/reload-plugins/reload-skills` — run as `/reload-plugins` with an argument, never reloading skills at all. `lanes_total: 0` is a normal outcome, not an error. Sessions running outside the dashboard cannot be reached and must run the command themselves.
 
 `POST /api/cc-config/plugins/action` accepts `reload: true` for the counterpart behaviour: update one plugin, reload immediately. The batch reloads once at the end instead — one reload picks up every pending change, where N of them would re-scan the same directory N times. A reload is never sent after a *failed* action.
 

docs/LANES.md

@@ -599,6 +599,19 @@ contributes at most one record per node, however many times it ran — so this
 narrows the history, it does not skew a rate. The Workflows page renders this as one bar per node (see
 `client/src/components/workflows/LanePipelinePanel.tsx`).
 
+**A new run is opened by a DECLARATION, never by a detection alone.** `runs` is
+the denominator every rate on that page is read against, so what counts as a run
+decides whether the page is worth reading. Stage detection bounces by design —
+one feature's work reads `implement → tests → implement → tests` as the session
+edits, runs the suite, and edits again — and when any backwards move opened a
+run, a single feature was recorded as five or six of them. A real pass ends
+where the session says it ends: a backwards move only starts a new run when it
+is declared (`agenthub stage`, or a codex lane's ingest-driven declaration). A
+detection that moves backwards continues the run in flight. Reaching the last
+node still closes the run for both — work after `done` is new work by anyone's
+reading. On this repo's own lane the rule took a 26-run history down to 5, which
+is the number of features that were actually shipped through it.
+
 `?lane=<id>` narrows the same aggregation to one lane and its own archived
 features, which is what the panel's lane picker sends. The `lanes` array in the
 response is never narrowed — it populates that picker, so it has to keep