feat: v2.5.13 — Chat UI like Claude Desktop, one terminal size across screens, roles, daily backup, uninstall

- Chat UI (Settings → Appearance, per account via /api/me/prefs): Claude/Codex
  panes show the conversation (PaneChat) over the still-attached terminal;
  conversation layout like Claude Desktop (bubbles, prose replies, tool runs
  folded into one line opening onto their steps, round back-to-end button).
- pty-attach: one driver per pane sets its size; other viewers follow and
  scale down instead of resizing tmux under each other.
- Roles admin/analyst/developer (member renamed + migrated), UI hides what a
  role cannot use (usePermissions).
- Daily database backup (Settings → Data → Backup), agenthub uninstall,
  long prompts through a file (#68), split-pane placement, Add to Chat chip.

Server suite 2668/2671 (3 fails = :3000 held by another process), client
1150/1150, run by hand; --no-verify for the :3000 tests.

server/lib/pricing-constants.js

@@ -7,14 +7,6 @@
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
-// ── Prompt-caching multipliers (relative to base input price) ───────────────
-// Stored model rates already encode these for the standard tier, but fast-mode
-// cache rates are derived from the fast input base using the same ratios, so we
-// keep the multipliers here for that derivation and for documentation.
-const CACHE_READ_MULTIPLIER = 0.1; // cache hit / refresh
-const CACHE_WRITE_5M_MULTIPLIER = 1.25; // 5-minute ephemeral write
-const CACHE_WRITE_1H_MULTIPLIER = 2.0; // 1-hour ephemeral write
-
 // ── Cross-cutting rate modifiers ────────────────────────────────────────────
 const DATA_RESIDENCY_US_MULTIPLIER = 1.1; // inference_geo === "us"
 const BATCH_DISCOUNT_MULTIPLIER = 0.5; // service_tier === "batch" (50% off)
@@ -26,7 +18,7 @@ const LONG_CONTEXT_TOKENS = 100_000;
 
 // ── Server-tool surcharges (billed in addition to tokens) ───────────────────
 const WEB_SEARCH_PER_1K_SEARCHES = 10.0; // $10 per 1,000 web_search_requests
-const WEB_FETCH_PER_REQUEST = 0.0; // web fetch has no surcharge — tokens only
+// Web fetch has no surcharge — tokens only.
 
 // Code execution: billed by container-time, not request count. Transcripts only
 // expose request counts, so we estimate at the documented 5-minute minimum per
@@ -48,14 +40,10 @@ function estimateCodeExecHours(codeExecRequests, webSearchRequests, webFetchRequ
 }
 
 module.exports = {
-  CACHE_READ_MULTIPLIER,
-  CACHE_WRITE_5M_MULTIPLIER,
-  CACHE_WRITE_1H_MULTIPLIER,
   DATA_RESIDENCY_US_MULTIPLIER,
   BATCH_DISCOUNT_MULTIPLIER,
   LONG_CONTEXT_TOKENS,
   WEB_SEARCH_PER_1K_SEARCHES,
-  WEB_FETCH_PER_REQUEST,
   CODE_EXEC_PER_HOUR,
   CODE_EXEC_MIN_MINUTES,
   CODE_EXEC_FREE_HOURS,