remove the projects feature

Being retired, so it is deleted rather than fixed — it had both defects dashboards just
had (edit dropping ?selected=, an abandoned edit following you onto the next item) and
repairing them was work for something on its way out.

Gone: the two screens and the panel apps, the three routes, the dock item and its entry
in the default dock paths (client and the three server-side copies), the page-title rule,
the app-registry entries, the barrel exports, the `projects` table with its queries and
row types, and the proj-meta/proj-layout/proj-terminals/proj-host-terminals branches in
the dashboards endpoint. The chat context and terminal state-key special cases for
`proj-layout-` went with them.

Deliberately kept: `getUserProjectsDir` in data-path.ts — the apps and dev-server routers
resolve user apps under the same on-disk Projects/ directory and are unrelated to this
feature. Nothing on disk is touched.

Needs `bun db:push` to drop the table; the schema change is the only thing standing
between the code and the database. One row was in it.

tsgo clean, 56/56 tests, no references left in src. Not yet exercised at runtime — the
restart is what will prove it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

docs/nav-test-checklist.md

@@ -66,39 +66,29 @@ on refresh or a pasted URL — now runs on every ordinary click, and it calls `s
 - [x] **J7** Both panels (Running/Queued **and** History) navigate correctly.
 - [x] **J8** Different detail types still render (script terminal / pipeline steps / download).
 
-## D — Dashboards (`/dashboards`) — H2 — 2/13 (highest risk: never runtime-tested)
+## D — Dashboards (`/dashboards`) — H2 — 12/13 ✅ (D12-edit on mobile: not fixed, mobile web being retired)
 
 - [x] **D1** Click a row → URL becomes `/dashboards?selected=<id>`.
 - [x] **D2** The preview panel shows that dashboard.
-- [ ] **D3** The clicked row is highlighted.
-- [ ] **D4** Preview's "open" arrow overlay → `/dashboards/<id>` (full page).
-- [ ] **D5** "New Dashboard" → create form appears; `?selected=` cleared from the URL.
-- [ ] **D6** Create a dashboard → navigates to the full `/dashboards/<id>`.
-- [ ] **D7** Edit (pencil) → edit form appears; does **not** navigate.
-- [ ] **D8** Save an edit → preview shows the edited dashboard (`?selected=<newid>`).
-- [ ] **D9** Delete → removed; if it was selected, the preview clears.
-- [ ] **D10** Edit/delete buttons do **not** trigger navigation (siblings of the link, not nested).
-- [ ] **D11** A dashboard row **outside** `/dashboards` opens `/dashboards/<id>` directly.
-- [ ] **D12** Mobile: selecting shows the detail panel; back clears it.
-- [ ] **D13** Deep-link `/dashboards?selected=<id>` in a fresh tab → preview shows it.
+- [x] **D3** The clicked row is highlighted.
+- [x] **D4** Preview's "open" arrow overlay → `/dashboards/<id>` (full page).
+- [x] **D5** "New Dashboard" → create form appears; `?selected=` cleared from the URL.
+- [x] **D6** Create a dashboard → navigates to the full `/dashboards/<id>`.
+- [!] **D7** Edit (pencil) → edit form appears; does **not** navigate.
+- [x] **D8** Save an edit → preview shows the edited dashboard (`?selected=<newid>`).
+- [x] **D9** Delete → removed; if it was selected, the preview clears.
+- [x] **D10** Edit/delete buttons do **not** trigger navigation (siblings of the link, not nested).
+- [x] **D11** A dashboard row **outside** `/dashboards` opens `/dashboards/<id>` directly.
+- [~] **D12** Mobile: selecting shows the detail panel; back clears it.
+- [x] **D13** Deep-link `/dashboards?selected=<id>` in a fresh tab → preview shows it.
 
-## P — Projects (`/projects`) — H3 — 0/15 (mirror of D, also never runtime-tested)
+## P — Projects — DROPPED
 
-- [ ] **P1** Click a row → URL becomes `/projects?selected=<id>`.
-- [ ] **P2** The preview shows that project.
-- [ ] **P3** The clicked row is highlighted.
-- [ ] **P4** Preview "open" arrow → `/projects/<id>` (full page).
-- [ ] **P5** "New Project" → create form; `?selected=` cleared.
-- [ ] **P6** Create a project → navigates to `/projects/<id>`.
-- [ ] **P7** Edit (pencil) → edit form; no navigation.
-- [ ] **P8** Save an edit → preview shows the edited project (`?selected=<newid>`).
-- [ ] **P9** Delete → removed; clears preview if selected.
-- [ ] **P10** Publish (rocket) → opens the publish dialog; does **not** navigate.
-- [ ] **P11** Publish/edit/delete buttons don't trigger navigation.
-- [ ] **P12** A project row **outside** `/projects` opens `/projects/<id>` directly.
-- [ ] **P13** `/projects/new` → lands on `/projects` in create mode.
-- [ ] **P14** Mobile: select shows detail; back clears it.
-- [ ] **P15** Deep-link `/projects?selected=<id>` → preview shows it.
+The Projects feature was removed rather than fixed (see the deletion commit). All 15 P checks are void.
+
+It had the same two defects Dashboards had — edit clearing `?selected=`, and an abandoned edit following
+you to the next item — plus the same structure that caused them: the form reachable only through the
+empty state. None of it was worth repairing for a feature being retired.
 
 ## X — Chat lazy-load × sidecars — 0/3