feat(reports): saved-template store + CRUD + dialog integration (phase C)

Saves rep-configured export setups so a "Monthly board report" or
"Weekly pipeline review" template only has to be assembled once.

Schema (migration 0079_report_templates.sql + drizzle entry):
  - report_templates: id, port_id, kind, name, description, config
    (jsonb), created_by, created_at, updated_at.
  - Sibling-name uniqueness scoped (port_id, kind, LOWER(name)) so
    Port A and Port B can both have "Quarterly review" without
    colliding, and two different KINDS in the same port can share a
    name (a clients "Quarterly review" + an interests "Quarterly
    review" coexist).
  - port_id FK cascades on delete; templates evaporate with the
    parent port. No cross-port enumeration risk since every query
    filters by port_id.

Service (src/lib/services/report-templates.service.ts):
  - createReportTemplate / listReportTemplates / getReportTemplate /
    updateReportTemplate / deleteReportTemplate.
  - Audit-logs every write with old/new values for the rename case.
  - Surfaces sibling-name collisions as ConflictError with a
    rep-readable message ('A "Monthly board report" template
    already exists for the dashboard kind').

Routes:
  - GET  /api/v1/reports/templates?kind=clients
  - POST /api/v1/reports/templates
  - GET  /api/v1/reports/templates/[id]
  - PATCH /api/v1/reports/templates/[id]
  - DELETE /api/v1/reports/templates/[id]
  All gated on `reports.export` — same permission as generating
  reports lets the rep manage the templates that drive them.
  POST cross-validates that `body.kind === body.config.kind` so a
  rep can't sneak a dashboard config into a clients template and
  confuse the rendering path at use time.

UI:
  - SavedTemplatesPicker reusable component — dropdown of templates
    for this port + kind, inline "Save as template" toggle that
    expands to a name input + Save button, delete button next to
    the picker once a template is selected.
  - Wired into both ExportDashboardPdfButton + ExportListPdfButton.
    Applying a saved template hydrates the dialog's form (selected
    widgets / filters / title) from the saved config.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/db/schema/index.ts

@@ -74,6 +74,9 @@ export * from './supplemental-forms';
 // Pipeline refactor — qualification criteria, payment records
 export * from './pipeline';
 
+// Saved PDF-report templates (`/api/v1/reports/templates`).
+export * from './reports';
+
 // Relations (must come last - references all tables)
 export * from './relations';
 export * from './tracked-links';

src/lib/db/schema/reports.ts

@@ -0,0 +1,53 @@
+import { index, jsonb, pgTable, text, timestamp, uniqueIndex } from 'drizzle-orm/pg-core';
+import { sql } from 'drizzle-orm';
+
+import { ports } from './ports';
+
+/**
+ * Saved report templates. Each row captures a named, port-scoped
+ * configuration that backs the "Saved templates" dropdown in the
+ * Export-as-PDF dialog. The `config` JSONB matches the discriminated-
+ * union shape the route schema enforces, so reusing a template is a
+ * straight pass-through to /api/v1/reports/generate.
+ *
+ * Migration: 0079_report_templates.sql.
+ */
+export const reportTemplates = pgTable(
+  'report_templates',
+  {
+    id: text('id')
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
+    portId: text('port_id')
+      .notNull()
+      .references(() => ports.id, { onDelete: 'cascade' }),
+    /** Mirrors the discriminator on ReportConfig — 'dashboard' |
+     *  'clients' | 'berths' | 'interests'. Validated at the route
+     *  layer. */
+    kind: text('kind').notNull(),
+    name: text('name').notNull(),
+    description: text('description'),
+    /** Untyped at the Drizzle layer; route + service layers validate
+     *  via the same zod schemas they use on `/api/v1/reports/generate`. */
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    config: jsonb('config').$type<Record<string, any>>().notNull(),
+    createdBy: text('created_by').notNull(),
+    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => [
+    index('idx_report_templates_port').on(table.portId),
+    index('idx_report_templates_port_kind').on(table.portId, table.kind),
+    // Sibling-name uniqueness per port+kind. The lower() expression in
+    // the SQL migration mirrors how case-insensitive collisions are
+    // handled elsewhere in the schema.
+    uniqueIndex('uniq_report_templates_port_kind_name').on(
+      table.portId,
+      table.kind,
+      sql`LOWER(${table.name})`,
+    ),
+  ],
+);
+
+export type ReportTemplate = typeof reportTemplates.$inferSelect;
+export type NewReportTemplate = typeof reportTemplates.$inferInsert;