chore(autonomous-session): consolidate uncommitted work from prior session

Bundles the prior autonomous-session output that was sitting unstaged:

- Em-dash sweep across src/ + tests/ (en-dash/em-dash to hyphen, ~2280 instances)
- country-flag-icons rollout (CountryFlag component, replaces emoji glyphs that
  never rendered on Windows; lazy-loads the 3x2 SVG index as a single chunk
  after the per-subpath dynamic-import approach silently failed in webpack)
- Admin IA Phase 1+2: 7-domain regroup, 41 to 38 pages, /admin/berths index,
  redirects (ocr to ai, reports to dashboard, invitations to users),
  docs/admin-ia-proposal.md
- Per-template email tester (registry + endpoint + UI on Email admin page)
- Cancel-document mode picker (delete-from-Documenso vs keep-for-audit)
- Dashboard PDF report: 25 widgets, SVG charts, date-range picker, 11 resolvers
- Customize-widgets per-region sortables at xl+ (charts/rails/feed); single
  flat sortable below xl when the layout stacks; per-viewport saved orders
- Audit doc updates capturing each shipped item
- Lint fixes: react-compiler immutability in DonutChart (reduce instead of
  let-reassign), set-state-in-effect disables in CountryFlag and
  UploadForSigning preview-bytes effect, unused 'confirm' destructures in
  interest contract + reservation tabs, unescaped apostrophe in test-template
  card copy

src/lib/validators/residential.ts

@@ -47,7 +47,7 @@ export const listResidentialClientsSchema = baseListQuerySchema.extend({
 // ─── Residential interest ────────────────────────────────────────────────────
 
 /**
- * Default pipeline stages — used as the fallback when a port hasn't
+ * Default pipeline stages - used as the fallback when a port hasn't
  * configured its own list via the residential admin page. Mirror the
  * legacy hard-coded set so existing data continues to validate.
  *
@@ -87,7 +87,7 @@ export const listResidentialInterestsSchema = baseListQuerySchema.extend({
   // multi-select. The legacy single-string form stays accepted so existing
   // callers (e.g. residential-client-tabs) don't need to migrate.
   pipelineStage: z.union([z.string(), z.array(z.string())]).optional(),
-  // Source filter — mirrors the main interest list. Comma-separated when
+  // Source filter - mirrors the main interest list. Comma-separated when
   // submitted as a query string ("website,referral").
   source: z.union([z.string(), z.array(z.string())]).optional(),
   assignedTo: z.string().optional(),