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/error-classifier.ts

@@ -3,7 +3,7 @@
  *
  * Given an `error_events` row, returns a short human-readable label +
  * a longer hint pointing at the probable root cause. This is best-effort
- * — the goal is to save the admin five minutes of stack reading on the
+ * - the goal is to save the admin five minutes of stack reading on the
  * common cases (FK violations, schema drift, external service outages,
  * timeouts) without giving false confidence on the unusual ones.
  *
@@ -30,7 +30,7 @@ export interface LikelyCulprit {
 const PG_CODE_HINTS: Record<string, LikelyCulprit> = {
   '23502': {
     label: 'NOT NULL violation',
-    hint: 'A required column was missing on insert. Check the validator vs the schema — a recently added .notNull() column may not have a default.',
+    hint: 'A required column was missing on insert. Check the validator vs the schema - a recently added .notNull() column may not have a default.',
     subsystem: 'db',
   },
   '23503': {
@@ -50,7 +50,7 @@ const PG_CODE_HINTS: Record<string, LikelyCulprit> = {
   },
   '42703': {
     label: 'Schema drift',
-    hint: 'A column referenced by the query does not exist in the database. The most recent migration probably has not been applied — run pnpm db:push or apply the SQL file.',
+    hint: 'A column referenced by the query does not exist in the database. The most recent migration probably has not been applied - run pnpm db:push or apply the SQL file.',
     subsystem: 'db',
   },
   '42P01': {
@@ -143,7 +143,7 @@ const STACK_PATH_HINTS: Array<{ pattern: RegExp; culprit: LikelyCulprit }> = [
   },
 ];
 
-/** Classify by free-text scan of the error message — last-resort. */
+/** Classify by free-text scan of the error message - last-resort. */
 const MESSAGE_HINTS: Array<{ pattern: RegExp; culprit: LikelyCulprit }> = [
   {
     pattern: /econnrefused|enotfound|getaddrinfo/i,
@@ -181,7 +181,7 @@ const MESSAGE_HINTS: Array<{ pattern: RegExp; culprit: LikelyCulprit }> = [
 
 /**
  * Best-effort culprit classification. Returns null when nothing
- * matches — the inspector will display "Uncategorized".
+ * matches - the inspector will display "Uncategorized".
  */
 export function classifyError(row: ErrorEvent): LikelyCulprit | null {
   // 1. Postgres SQLSTATE on the metadata bag.