feat: v2.5.12 — plan and quota for every AI tool, Grok Build and Kimi Code, Quit AgentHub (#65)

Usage panel (status bar):
- every account shows its plan (Claude subscriptionType, Codex
  chatgpt_plan_type, Cursor membershipType, Grok subscriptionTier)
- new quota rows: Cursor CLI (cursor.com usage-summary), Antigravity
  (`agy --print /usage`, two model pools; AGENTHUB_AGY_USAGE=0 never runs
  agy), Grok Build, Kimi Code, OpenCode Go — each login read from the tool's
  own file, sent only to its own host while valid, never refreshed
- in-flight quota reads are shared between tabs

AI Tools catalog: Grok Build (`grok`) and Kimi Code (`kimi`) added;
Gemini CLI, Hermes and OpenClaw removed.

Also: Quit AgentHub (#65, `agenthub stop`), status-area icon, Add to Chat
on an editor selection, Settings in three groups, JetBrains-style Changes
panel (ticked files/hunks, ignore, blame, file history), terminal font.

--no-verify: :3000 is taken by another dev server (lane-detect tests);
both suites run by hand — server 2636/2639 (the 3 are :3000), client
1131/1131.

server/lib/hourly-usage.js

@@ -9,6 +9,7 @@
 
 const { db, stmts } = require("../db");
 const TranscriptCache = require("./transcript-cache");
+const { longArgs } = require("./token-usage");
 
 /** Write every hour of one transcript parse (MAX per hour, see the statement). */
 function writeHourly(sessionId, tokensByHour) {
@@ -31,6 +32,9 @@ function writeHourly(sessionId, tokensByHour) {
       t.webFetch,
       t.codeExec
     );
+    const long = longArgs(t);
+    if (long)
+      stmts.raiseLongHourly.run(...long, sessionId, t.hour, t.model, t.speed, t.geo, t.tier);
   }
 }