feat: plane-lift schema (states/modules/cycles/links)

Phase 1 of the Plane feature lift into Project E.

Schema changes:
- Add stateGroupEnum, moduleStatusEnum, linkTypeEnum
- Add states table (per-project workflow states with group enum)
- Add modules table (project-scoped planning buckets)
- Add cycles table (time-boxed sprints)
- Add links table (canonical cross-entity mesh)
- Drop taskStatusEnum and tasks.status column
- Add stateId, moduleId, cycleId FKs to tasks
- Drop taskDependencies, noteLinks, noteEntityLinks tables

Project creation bootstrap:
- Seed 5 default states (Backlog/Todo/In Progress/Done/Cancelled) on new project

Minimal API fixes for typecheck:
- Remove references to dropped tables/columns
- Replace status-based queries with completedAt checks
- Stub deprecated dependency/status endpoints for Phase 2

Drizzle migration: 0008_plane-lift-schema.sql (custom, big-bang)

drizzle/meta/_journal.json

@@ -0,0 +1,69 @@
+{
+  "version": "7",
+  "dialect": "postgresql",
+  "entries": [
+    {
+      "idx": 0,
+      "version": "7",
+      "dialect": "postgresql",
+      "tag": "0000_outstanding_zuras",
+      "createdAt": "2025-01-01T00:00:00.000Z"
+    },
+    {
+      "idx": 1,
+      "version": "7",
+      "dialect": "postgresql",
+      "tag": "0001_warm_eternity",
+      "createdAt": "2025-01-01T00:01:00.000Z"
+    },
+    {
+      "idx": 2,
+      "version": "7",
+      "dialect": "postgresql",
+      "tag": "0002_steep_black_widow",
+      "createdAt": "2025-01-01T00:02:00.000Z"
+    },
+    {
+      "idx": 3,
+      "version": "7",
+      "dialect": "postgresql",
+      "tag": "0003_amazing_saracen",
+      "createdAt": "2025-01-01T00:03:00.000Z"
+    },
+    {
+      "idx": 4,
+      "version": "7",
+      "dialect": "postgresql",
+      "tag": "0004_add_owner_id_to_domains",
+      "createdAt": "2025-01-01T00:04:00.000Z"
+    },
+    {
+      "idx": 5,
+      "version": "7",
+      "dialect": "postgresql",
+      "tag": "0005_search_vector_trigger",
+      "createdAt": "2025-01-01T00:05:00.000Z"
+    },
+    {
+      "idx": 6,
+      "version": "7",
+      "dialect": "postgresql",
+      "tag": "0006_minor_doctor_octopus",
+      "createdAt": "2025-01-01T00:06:00.000Z"
+    },
+    {
+      "idx": 7,
+      "version": "7",
+      "dialect": "postgresql",
+      "tag": "0007_drop_canvas_reports",
+      "createdAt": "2025-01-01T00:07:00.000Z"
+    },
+    {
+      "idx": 8,
+      "version": "7",
+      "when": 1788800393149,
+      "tag": "0008_plane-lift-schema",
+      "breakpoints": true
+    }
+  ]
+}