feat: entry templates + tag autocomplete + slideover push + robustness bundle

- Entry templates: new vault_entries.template column drives a typed
  sub-kind ('credit-card', 'ssh-key', 'server', 'recovery-codes'). Card
  + table label off the template, badge reads "credit card" instead of
  "note". Templates seed kind=note (no site/password required), use
  custom_fields with optional dropdown options (brand, month/year,
  protocol). Round-tripped across export/import/duplicate/master-pw
  rotation, preserved by partial PUTs via a HasTemplate flag.
- Custom fields: support per-field `options[]` rendering as <select>
  (card brand, expiry MM/YYYY, SSH/server protocol).
- Tags: existing-tag autocomplete dropdown under the chip input,
  filtered against what's already selected.
- Search history: per-query X for individual delete + 1s debounced
  commit (no Enter required).
- Slideover: clicking outside closes again (drag-selection respected
  via mousedown origin tracker), Esc closes, X closes. App shell is
  pushed left by 420px when the panel is open so the table / pagination
  / sort / search stay visible and interactive.
- Export/import: JSON now round-trips custom_fields, attachments
  (decrypted to base64, re-encrypted under current key on restore),
  icon_b64, and template. CSV warning lists what's not included.
- Auto-backup: same payload shape as user-driven export.
- Notes: import (JSON + CSV) accepts kind=note with empty site,
  preserves title/template/custom_fields. CSV parser detects kind/
  template columns.
- Bulk-import response returns `ids[]` parallel to input so the
  client can map back to new entry IDs (drives attachment restore).
- Move-to-folder bugs fixed: moveEntryToFolder, batchMoveToFolder,
  addTag, batchAddTag were all silently wiping TOTP / custom_fields
  / kind / template via partial PUT. Now re-ship full payload.
- Master-pw rotation: server mints a fresh session token + csrf so
  the very next request after rotation no longer ESessionRejects.
  Client adopts the new pair. Attachments are re-encrypted client-side
  during rotation (GET old → decrypt with old key → encrypt with new
  → PUT). New endpoints: GET /attachments/all, PUT /attachments/:id.
- Duplicate: carries icon_b64 + template + attachments to the copy.
- HandleCreateEntry: accepts icon_b64.
- FireDAC param fix: all blob/icon/custom_fields params use ftMemo +
  .Value assignment so SQLite TEXT no longer truncates to 4000 chars
  (deepseek's 200+ KB favicon was being wiped on lock/unlock).
- HandleSetEntryIcon cap: 262144 → 524288 chars (base64 of a 256 KB
  raw fetch overflows the old cap, fails silently in saveEntryIcon).
- Native save dialog: surfaces server errors instead of swallowing.
- Modals: reauth (export) + backup-password prompt support inline
  error display, retry up to 5 attempts, then hard-stop.
- Keyboard cursor (j/k): bootstraps to current page, auto-paginates
  when the cursor crosses a page boundary, Enter opens slideover.
- Slideover focuses Title on edit-open so j/k → Enter → type Just
  Works.
- TOTP tool: Esc closes the modal.
- App version + launch mode (auto/manual): exposed via bridge,
  surfaced in Settings → Account. Autostart launches suppress the
  first-time tray balloon.
- Passkey button hidden (Delphi backend stubs WebAuthn at 501).
- TEST_PLAN.md captured for regression coverage.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

delphi-backend/Source/PM.Database.pas

@@ -306,6 +306,14 @@ begin
   // the "aged password" badge. Legacy rows: NULL → JS falls back to
   // updated_at, then created_at.
   AddColumnIfMissing('vault_entries', 'password_changed_at', 'DATETIME');
+  // Pinned entries float to the top of every view, regardless of sort.
+  // Independent from favorite (which is a filter, not a sort override).
+  AddColumnIfMissing('vault_entries', 'pinned',             'INTEGER DEFAULT 0');
+  // Template identifier: empty/NULL = generic login or note; otherwise a
+  // string like 'credit-card', 'ssh-key', 'server', 'recovery-codes'.
+  // Drives the card/table label so notes-with-fields read as "Credit card"
+  // instead of the generic "Encrypted note" placeholder.
+  AddColumnIfMissing('vault_entries', 'template',           'TEXT');
   // Per-folder customisation. NULL = no override → JS uses the default
   // accent + i-folder symbol.
   AddColumnIfMissing('folders',       'color',             'TEXT');