diff --git a/docs/providers/antigravity.md b/docs/providers/antigravity.md
index 4438c043..c308c5fc 100644
--- a/docs/providers/antigravity.md
+++ b/docs/providers/antigravity.md
@@ -13,7 +13,7 @@ CodeBurn discovers Antigravity sessions from local directories on disk, then que
 1. **Session Discovery:** It scans the following folders for `.pb` or `.db` files:
    - **Antigravity CLI:** `%USERPROFILE%\.gemini\antigravity-cli\conversations` (and `implicit`)
    - **Antigravity App/older path:** `%USERPROFILE%\.gemini\antigravity\conversations`
-   - **Antigravity IDE (VSCode-based):** `%USERPROFILE%\.gemini\antigravity-ide\conversations` (and `implicit`)
+   - **Antigravity IDE:** `%USERPROFILE%\.gemini\antigravity-ide\conversations` (and `implicit`). The IDE also maintains VSCode-style global state at `%APPDATA%\Antigravity IDE\User\globalStorage\state.vscdb`, but that DB stores trajectory metadata (titles, timestamps, workspace paths) — not token usage. Token usage data still comes from the `.db` conversation files.
 2. **Language Server RPC Query:** It locates the active language-server process via `ps` on POSIX or `Get-CimInstance Win32_Process` on Windows. It extracts the port and CSRF token from the process arguments, and queries the local HTTPS RPC endpoint `GetCascadeTrajectoryGeneratorMetadata` to parse the session.
 3. **Cache Fallback:** If the language server is not running, it falls back to the local results cache.
 
diff --git a/package-lock.json b/package-lock.json
index d7b693f1..e649491f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "codeburn",
-  "version": "0.9.12",
+  "version": "0.9.15",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "codeburn",
-      "version": "0.9.12",
+      "version": "0.9.15",
       "license": "MIT",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.29.0",
diff --git a/src/main.ts b/src/main.ts
index 10b4f632..79f87007 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1496,9 +1496,10 @@ program
     try {
       if (action === 'install') {
         const result = await installAntigravityStatusLineHook(!!opts.force)
-        console.log(result === 'already-installed'
-          ? '\n  Antigravity CLI usage capture is already installed.\n'
-          : '\n  Antigravity CLI usage capture installed.\n')
+        const headline = result === 'already-installed'
+          ? 'Antigravity CLI usage capture is already installed.'
+          : 'Antigravity CLI usage capture installed.'
+        console.log(`\n  ${headline}\n  Note: this captures CLI (agy) sessions only. IDE sessions are read from .db files automatically.\n`)
         return
       }
       if (action === 'uninstall') {
diff --git a/src/providers/antigravity.ts b/src/providers/antigravity.ts
index 710b4bf7..a5e2872d 100644
--- a/src/providers/antigravity.ts
+++ b/src/providers/antigravity.ts
@@ -43,7 +43,7 @@ const CONVERSATION_ROOTS: readonly AntigravityConversationRoot[] = [
     extensions: ['.pb'],
   },
 ] as const
-const CACHE_VERSION = 2
+const CACHE_VERSION = 4
 
 const RPC_TIMEOUT_MS = 5000
 const MAX_RESPONSE_BYTES = 16 * 1024 * 1024
@@ -468,6 +468,10 @@ export function antigravityAppDataDirFromSourcePath(path: string): 'antigravity'
   const lower = path.replace(/\\/g, '/').toLowerCase()
   if (lower.includes('/.gemini/antigravity-ide/')) return 'antigravity-ide'
   if (lower.includes('/.gemini/antigravity-cli/')) return 'antigravity-cli'
+  // APPDATA-style install dirs (e.g. `%APPDATA%\Antigravity IDE\...`) — checked
+  // after the .gemini roots so a profile directory containing "Antigravity IDE"
+  // cannot misclassify CLI conversation paths.
+  if (lower.includes('/antigravity ide/')) return 'antigravity-ide'
   return 'antigravity'
 }
 
@@ -1197,6 +1201,24 @@ function applyAntigravityProject(call: ParsedProviderCall, source: SessionSource
   call.project = source.project
 }
 
+// gen_metadata rows and some RPC entries (missing chatStartMetadata.createdAt)
+// carry no per-call timestamp. Left empty, those calls are silently dropped by
+// the date-range filters in parser.ts (`if (!callTs) continue`). Every emission
+// path stamps the conversation file's mtime as a fallback: all calls in the
+// session then share the file's last-write time — best available, since the
+// source data has no per-call times. Returns true when a call was repaired so
+// cache-hit paths can persist the fix.
+function stampFallbackTimestamp(calls: ParsedProviderCall[], fallbackTimestamp: string): boolean {
+  let repaired = false
+  for (const call of calls) {
+    if (!call.timestamp) {
+      call.timestamp = fallbackTimestamp
+      repaired = true
+    }
+  }
+  return repaired
+}
+
 function createParser(source: SessionSource, seenKeys: Set<string>): SessionParser {
   return {
     async *parse(): AsyncGenerator<ParsedProviderCall> {
@@ -1215,9 +1237,11 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
       if (!s) return
 
       const projectPath = await extractWorkspacePath(source.path)
+      const fallbackTimestamp = new Date(s.mtimeMs).toISOString()
 
       const cached = cache.cascades[cascadeId]
       if (cached && cached.mtimeMs === s.mtimeMs && cached.sizeBytes === s.size && cached.calls.length > 0) {
+        if (stampFallbackTimestamp(cached.calls, fallbackTimestamp)) cacheDirty = true
         for (const call of cached.calls) {
           applyAntigravityProject(call, source, projectPath)
           if (seenKeys.has(call.deduplicationKey)) continue
@@ -1229,6 +1253,7 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
 
       const sqliteResults = await parseSqliteGenMetadataCalls(source.path, cascadeId)
       if (sqliteResults.length > 0) {
+        stampFallbackTimestamp(sqliteResults, fallbackTimestamp)
         for (const call of sqliteResults) {
           applyAntigravityProject(call, source, projectPath)
         }
@@ -1251,6 +1276,7 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
       const server = await detectServer(antigravityAppDataDirFromSourcePath(source.path))
       if (!server) {
         if (cached) {
+          if (stampFallbackTimestamp(cached.calls, fallbackTimestamp)) cacheDirty = true
           for (const call of cached.calls) {
             applyAntigravityProject(call, source, projectPath)
             if (seenKeys.has(call.deduplicationKey)) continue
@@ -1270,6 +1296,7 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
         )
       } catch {
         if (cached) {
+          if (stampFallbackTimestamp(cached.calls, fallbackTimestamp)) cacheDirty = true
           for (const call of cached.calls) {
             applyAntigravityProject(call, source, projectPath)
             if (seenKeys.has(call.deduplicationKey)) continue
@@ -1281,6 +1308,7 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
       }
 
       const results = buildCallsFromGeneratorMetadata(cascadeId, metadata, modelMap)
+      stampFallbackTimestamp(results, fallbackTimestamp)
       for (const call of results) {
         applyAntigravityProject(call, source, projectPath)
       }
diff --git a/src/session-cache.ts b/src/session-cache.ts
index abfb41c8..79424112 100644
--- a/src/session-cache.ts
+++ b/src/session-cache.ts
@@ -118,7 +118,7 @@ const PROVIDER_PARSE_VERSIONS: Record<string, string> = {
   'kilo-code': 'worktree-project-grouping-v1',
   'roo-code': 'worktree-project-grouping-v1',
   warp: 'worktree-project-grouping-v1',
-  antigravity: 'worktree-project-grouping-v3',
+  antigravity: 'worktree-project-grouping-v5',
 }
 
 // ── Cache Dir ──────────────────────────────────────────────────────────
diff --git a/tests/providers/antigravity.test.ts b/tests/providers/antigravity.test.ts
index e98fd591..255d4249 100644
--- a/tests/providers/antigravity.test.ts
+++ b/tests/providers/antigravity.test.ts
@@ -1,4 +1,4 @@
-import { mkdtemp, mkdir, readFile, rm, writeFile } from 'fs/promises'
+import { mkdtemp, mkdir, readFile, rm, stat, writeFile } from 'fs/promises'
 import { tmpdir } from 'os'
 import { join } from 'path'
 import { createRequire } from 'node:module'
@@ -605,4 +605,74 @@ describe('antigravity provider helpers', () => {
       await rm(tempHome, { recursive: true, force: true })
     }
   })
+
+  async function withTempAntigravityHome(prefix: string, fn: (tempHome: string) => Promise<void>): Promise<void> {
+    const tempHome = await mkdtemp(join(tmpdir(), prefix))
+    const previousCacheDir = process.env['CODEBURN_CACHE_DIR']
+    process.env['CODEBURN_CACHE_DIR'] = join(tempHome, 'cache')
+    try {
+      await fn(tempHome)
+    } finally {
+      if (previousCacheDir === undefined) delete process.env['CODEBURN_CACHE_DIR']
+      else process.env['CODEBURN_CACHE_DIR'] = previousCacheDir
+      await rm(tempHome, { recursive: true, force: true })
+    }
+  }
+
+  it('stamps file mtime as fallback timestamp for SQLite-parsed calls', async () => {
+    if (!isSqliteAvailable()) return
+
+    await withTempAntigravityHome('codeburn-antigravity-timestamp-', async (tempHome) => {
+      const fixture = JSON.parse(await readFile(
+        new URL('../fixtures/antigravity-cli-current/gen-metadata.json', import.meta.url),
+        'utf-8',
+      )) as CurrentCliFixture
+      const conversationsDir = join(tempHome, '.gemini', 'antigravity-ide', 'conversations')
+
+      await mkdir(conversationsDir, { recursive: true })
+
+      const dbPath = join(conversationsDir, `${fixture.conversationId}.db`)
+      createCurrentAntigravityCliDb(dbPath, fixture)
+
+      const beforeStat = await stat(dbPath)
+
+      const parser = createAntigravityProvider().createSessionParser({
+        path: dbPath,
+        project: 'antigravity-ide',
+        provider: 'antigravity',
+      }, new Set())
+      const calls: ParsedProviderCall[] = []
+      for await (const call of parser.parse()) calls.push(call)
+
+      expect(calls.length).toBeGreaterThan(0)
+      for (const call of calls) {
+        expect(call.timestamp).not.toBe('')
+        const callTime = new Date(call.timestamp).getTime()
+        expect(Math.abs(callTime - beforeStat.mtimeMs)).toBeLessThan(5000)
+      }
+    })
+  })
+
+  it('classifies APPDATA Antigravity IDE paths as antigravity-ide', () => {
+    expect(antigravityAppDataDirFromSourcePath(
+      'C:\\Users\\User\\AppData\\Roaming\\Antigravity IDE\\User\\globalStorage\\state.vscdb',
+    )).toBe('antigravity-ide')
+
+    expect(antigravityAppDataDirFromSourcePath(
+      '/Users/User/.gemini/antigravity-ide/conversations/abc.db',
+    )).toBe('antigravity-ide')
+
+    expect(antigravityAppDataDirFromSourcePath(
+      '/Users/User/.gemini/antigravity-cli/conversations/abc.db',
+    )).toBe('antigravity-cli')
+
+    // .gemini roots take precedence over the broad "Antigravity IDE" match.
+    expect(antigravityAppDataDirFromSourcePath(
+      'C:\\Users\\Antigravity IDE\\.gemini\\antigravity-cli\\conversations\\abc.db',
+    )).toBe('antigravity-cli')
+
+    expect(antigravityAppDataDirFromSourcePath(
+      '/Users/User/.gemini/antigravity/conversations/abc.db',
+    )).toBe('antigravity')
+  })
 })