feat: implement PL-7, PL-8, PL-9 — state-driven board, module/cycle views, link panels + graph edges

PL-7 — Task Board Columns from States:
- Add State, Module, Cycle, Link TypeScript types to types/index.ts
- Add stateId, moduleId, cycleId, trackedMinutes to Task type
- Rewrite tasks.tsx: fetch states from API, render 5 state-group columns
  (backlog/unstarted/started/completed/cancelled), drag-and-drop updates
  stateId via PATCH /tasks/:id, colored state badges, state filter dropdown,
  project filter
- Fix deprecated POST /tasks/:id/status → PATCH /tasks/:id with stateId
- Update tasks/.tsx: state selector dropdown replaces hardcoded status enum,
  toggle complete uses state-based approach, dependencies replaced with
  link-based UI using /api/links

PL-8 — Module + Cycle Views:
- Create apps/api/src/routes/cycles.ts: full CRUD + task assignment/removal
- Create apps/api/src/routes/links.ts: list/create/delete links between entities
- Register cycleRoutes and linkRoutes in API index
- Add Modules tab to project detail: list modules, expand to show tasks,
  add/remove tasks from modules, create/edit/delete module dialogs
- Add Cycles tab to project detail: sprint board grid, backlog lane,
  manual task transfer between cycles and backlog, create/edit cycle dialogs
- Fix ProjectTasks toggle to use PATCH with stateId instead of deprecated endpoint

PL-9 — Link Panels + Graph:
- Update graph API to read links bidirectionally (source OR target)
- Add link type color map (LINK_TYPE_COLORS) for edge rendering
- Graph edges now colored by linkType (blocks=red, relates=gray, etc.)
- Filter panel shows link types with color indicators
- Task detail Dependencies tab now uses /api/links for add/remove links
- Added link type selector (blocks/relates/parent-child/created-from)

apps/api/src/routes/graph.ts

@@ -1,6 +1,6 @@
 import { Hono } from "hono";
 import { db, domains, notes, tasks, habits, projects, sections, tags as tagsTable, links } from "@project-e/db";
-import { and, eq, inArray, isNull } from "drizzle-orm";
+import { and, eq, inArray, isNull, or } from "drizzle-orm";
 import { requireAuth, requireWorkspaceAccess, AuthError } from "../middleware/auth";
 import { recordActivity } from "../middleware/activity";
 import { z } from "zod";
@@ -57,11 +57,11 @@ async function getGraphData(domainId: string): Promise<{ nodes: GraphNode[]; edg
   for (const s of sectionRows) addNode(s.id, s.name, 'section');
   for (const t of tagRows) addNode(t.id, t.name, 'tag');
 
-  // Read links from the canonical links table
-  const allIds = [...noteRows.map(n => n.id), ...taskRows.map(t => t.id)];
+  // Read links from the canonical links table (both directions)
+  const allIds = [...noteRows.map(n => n.id), ...taskRows.map(t => t.id), ...projectRows.map(p => p.id), ...sectionRows.map(s => s.id)];
   if (allIds.length > 0) {
     const linkRows = await db.select().from(links)
-      .where(inArray(links.sourceId, allIds));
+      .where(or(inArray(links.sourceId, allIds), inArray(links.targetId, allIds)));
     for (const l of linkRows) addEdge(l.sourceId, l.targetId, l.linkType);
   }