Move general tasks + time reqs to Settings; add date adjustments

- Rename 'Category Settings' to 'Settings' (nav, page title, component)
- Move Recurring General Tasks and Time Requirements editing to Settings page
- Planner still loads both for calcRequired calculations
- Add date-specific Adjustments section to Planner: per-date +/- hour
  offsets keyed by YYYY-MM-DD (non-recurring); feed into Required Hours total
- Adjustments row shown in Required Hours tfoot when non-zero

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/src/routes/config.js

@@ -8,7 +8,7 @@ export async function configRoutes(app) {
   // ── GET /api/config — all settings at once ──────────────────────────────
 
   app.get('/api/config', async (req) => {
-    const [timeReqs, staffData, pickupData, generalTasks, lastReviewed, toleranceMins, workforceRota, workforceDepts] =
+    const [timeReqs, staffData, pickupData, generalTasks, lastReviewed, toleranceMins, workforceRota, workforceDepts, adjustments] =
       await Promise.all([
         getConfig('time_requirements', {}),
         getConfig('staff_data', []),
@@ -18,6 +18,7 @@ export async function configRoutes(app) {
         getConfig('tolerance_minutes', 30),
         getConfig('workforce_rota', null),
         getConfig('workforce_departments', []),
+        getConfig('adjustments', []),
       ])
 
     const today = new Date()
@@ -35,6 +36,7 @@ export async function configRoutes(app) {
       tolerance_minutes:    toleranceMins  != null ? toleranceMins : 30,
       workforce_rota:       workforceRota   || null,
       workforce_departments: workforceDepts || [],
+      adjustments:          adjustments     || [],
     }
   })
 
@@ -138,6 +140,27 @@ export async function configRoutes(app) {
     return { ok: true }
   })
 
+  // ── PUT /api/config/adjustments ──────────────────────────────────────────
+
+  app.put('/api/config/adjustments', async (req, reply) => {
+    const { adjustments } = req.body || {}
+    if (!Array.isArray(adjustments)) return reply.status(400).send({ error: 'Invalid data' })
+
+    const clean = adjustments
+      .filter(a => a && typeof a.label === 'string')
+      .map(a => ({
+        label: a.label.trim(),
+        hours: Object.fromEntries(
+          Object.entries(a.hours || {})
+            .filter(([k]) => /^\d{4}-\d{2}-\d{2}$/.test(k))
+            .map(([k, v]) => [k, parseFloat(v) || 0])
+        ),
+      }))
+
+    await setConfig('adjustments', clean)
+    return { ok: true }
+  })
+
   // ── GET /api/categories — settings cap required ──────────────────────────
 
   app.get('/api/categories', { preHandler: requireCap('settings') }, async (req, reply) => {