Add department budget % allocation

- Budgets page: new dept split section with % inputs, equal-split button, save
- Weekly/Monthly: per-dept budget column using dept pcts from actuals response
- Backend: dept_budget_pcts in ALLOWED_KEYS; actuals returns dept_pcts map;
  budgets route adds GET /dept-config + PUT /dept-pcts endpoints

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

backend/src/routes/actuals.js

@@ -8,21 +8,23 @@ export async function actualsRoutes(fastify) {
     const { from, to } = request.query
     if (!from || !to) return reply.status(400).send({ error: 'from and to required' })
 
-    const showOncosts = (await getConfig('show_oncosts')) !== 'false'
-    const costCol = showOncosts ? 'total_cost' : 'base_cost'
+    const [showOncostsRaw, pctsRaw, dbRes] = await Promise.all([
+      getConfig('show_oncosts'),
+      getConfig('dept_budget_pcts'),
+      pool.query(
+        `SELECT date, department_id, department_name,
+                base_cost, total_cost, shift_count
+         FROM wage_actuals
+         WHERE date >= $1 AND date <= $2
+         ORDER BY date, department_name`,
+        [from, to]
+      ),
+    ])
 
-    const res = await pool.query(
-      `SELECT date, department_id, department_name,
-              base_cost, total_cost, shift_count
-       FROM wage_actuals
-       WHERE date >= $1 AND date <= $2
-       ORDER BY date, department_name`,
-      [from, to]
-    )
+    const showOncosts = showOncostsRaw !== 'false'
 
-    // Group by department, emit { dept_id, dept_name, days: { 'YYYY-MM-DD': cost } }
     const deptMap = {}
-    for (const row of res.rows) {
+    for (const row of dbRes.rows) {
       const d = row.date.toISOString().slice(0, 10)
       if (!deptMap[row.department_id]) {
         deptMap[row.department_id] = {
@@ -39,6 +41,11 @@ export async function actualsRoutes(fastify) {
       }
     }
 
-    return { departments: Object.values(deptMap), show_oncosts: showOncosts }
+    const dept_pcts = {}
+    if (pctsRaw) {
+      try { for (const item of JSON.parse(pctsRaw)) dept_pcts[item.id] = item.pct } catch {}
+    }
+
+    return { departments: Object.values(deptMap), show_oncosts: showOncosts, dept_pcts }
   })
 }

backend/src/routes/budgets.js

@@ -1,5 +1,5 @@
 import { requireAuth, requireCap } from '../auth.js'
-import { pool } from '../db.js'
+import { pool, getConfig, setConfig } from '../db.js'
 
 export async function budgetsRoutes(fastify) {
   fastify.addHook('preHandler', requireAuth)
@@ -25,7 +25,6 @@ export async function budgetsRoutes(fastify) {
       return reply.status(400).send({ error: 'budget_amount must be a non-negative number' })
     }
 
-    // Store as first day of month
     const monthDate = `${month}-01`
     await pool.query(
       `INSERT INTO wage_budgets (month, budget_amount, updated_at) VALUES ($1, $2, NOW())
@@ -34,4 +33,31 @@ export async function budgetsRoutes(fastify) {
     )
     return { ok: true }
   })
+
+  // Dept list + saved pcts — used by Budgets page (view cap)
+  fastify.get('/api/budgets/dept-config', { preHandler: requireCap('view') }, async () => {
+    const [deptsRaw, pctsRaw] = await Promise.all([
+      getConfig('departments'),
+      getConfig('dept_budget_pcts'),
+    ])
+
+    let depts = []
+    if (deptsRaw) {
+      try { depts = JSON.parse(deptsRaw).filter(d => d.enabled !== false) } catch {}
+    }
+
+    const pcts = {}
+    if (pctsRaw) {
+      try { for (const item of JSON.parse(pctsRaw)) pcts[item.id] = item.pct } catch {}
+    }
+
+    return { depts: depts.map(d => ({ id: d.id, name: d.name, pct: pcts[d.id] ?? 0 })) }
+  })
+
+  fastify.put('/api/budgets/dept-pcts', { preHandler: requireCap('budget') }, async (request, reply) => {
+    const { pcts } = request.body || {}
+    if (!Array.isArray(pcts)) return reply.status(400).send({ error: 'pcts must be an array' })
+    await setConfig('dept_budget_pcts', JSON.stringify(pcts))
+    return { ok: true }
+  })
 }

backend/src/routes/settings.js

@@ -2,7 +2,7 @@ import { requireAuth, requireCap } from '../auth.js'
 import { pool, getConfig, setConfig } from '../db.js'
 
 const ALLOWED_KEYS = new Set([
-  'forecasting_url', 'forecasting_api_key', 'show_oncosts', 'departments',
+  'forecasting_url', 'forecasting_api_key', 'show_oncosts', 'departments', 'dept_budget_pcts',
 ])
 
 export async function settingsRoutes(fastify) {