fix(opencode): read session fallback model from the real schema

src/providers/sqlite-session-parser.ts

@@ -36,7 +36,21 @@ type SessionTokenRow = {
   tokens_reasoning?: number
   tokens_cache_read?: number
   tokens_cache_write?: number
-  model_id?: string
+  model?: Uint8Array | string
+}
+
+function parseSessionModel(value: Uint8Array | string | undefined): string | undefined {
+  try {
+    const parsed: unknown = JSON.parse(blobToText(value))
+    if (parsed === null || typeof parsed !== 'object' || Array.isArray(parsed)) return undefined
+
+    const model = parsed as Record<string, unknown>
+    const id = typeof model['id'] === 'string' ? model['id'].trim() : ''
+    const providerID = typeof model['providerID'] === 'string' ? model['providerID'].trim() : ''
+    return id && providerID ? `${providerID}/${id}` : undefined
+  } catch {
+    return undefined
+  }
 }
 
 function tryQuerySessionTokens(db: SqliteDatabase, sessionId: string): {
@@ -45,7 +59,9 @@ function tryQuerySessionTokens(db: SqliteDatabase, sessionId: string): {
 } | null {
   try {
     const rows = db.query<SessionTokenRow>(
-      `SELECT cost, tokens_input, tokens_output, tokens_reasoning, tokens_cache_read, tokens_cache_write, model_id FROM session WHERE id = ?`,
+      `SELECT cost, tokens_input, tokens_output, tokens_reasoning, tokens_cache_read, tokens_cache_write,
+              CAST(model AS BLOB) AS model
+       FROM session WHERE id = ?`,
       [sessionId],
     )
     if (rows.length === 0) return null
@@ -57,7 +73,7 @@ function tryQuerySessionTokens(db: SqliteDatabase, sessionId: string): {
       reasoning: r.tokens_reasoning ?? 0,
       cacheRead: r.tokens_cache_read ?? 0,
       cacheWrite: r.tokens_cache_write ?? 0,
-      model: r.model_id ?? undefined,
+      model: parseSessionModel(r.model),
     }
   } catch {
     return null
@@ -324,4 +340,3 @@ export async function discoverSqliteSessions(
 
   return sessions
 }
-

src/session-cache.ts

@@ -222,9 +222,10 @@ export const PROVIDER_PARSE_VERSIONS: Record<string, string> = {
   'lingtai-tui': 'token-ledger-registry-activity-v3',
   'ibm-bob': 'worktree-project-grouping-v1',
   kiro: 'ide-parsing-v1-est-cost',
+  opencode: 'session-model-v1',
   quickdesk: 'emf-sqlite-v2-est-cost',
   kimicode: 'wire-usage-v1-est-cost',
-  'kilo-code': 'worktree-project-grouping-v1',
+  'kilo-code': 'worktree-project-grouping-v1-session-model-v1',
   'roo-code': 'worktree-project-grouping-v1',
   warp: 'worktree-project-grouping-v1-est-cost',
   antigravity: 'worktree-project-grouping-v5',

tests/providers/opencode.test.ts

@@ -823,10 +823,15 @@ skipUnlessSqlite('opencode provider - session parsing', () => {
       db.exec(`ALTER TABLE session ADD COLUMN tokens_reasoning INTEGER`)
       db.exec(`ALTER TABLE session ADD COLUMN tokens_cache_read INTEGER`)
       db.exec(`ALTER TABLE session ADD COLUMN tokens_cache_write INTEGER`)
-      db.exec(`ALTER TABLE session ADD COLUMN model_id TEXT`)
+      db.exec(`ALTER TABLE session ADD COLUMN model TEXT`)
 
       insertSession(db, 'sess-1')
-      db.prepare(`UPDATE session SET cost = 0.15, tokens_input = 5000, tokens_output = 2000, tokens_reasoning = 0, tokens_cache_read = 3000, tokens_cache_write = 1000, model_id = 'claude-sonnet-4-20250514' WHERE id = 'sess-1'`).run()
+      db.prepare(`UPDATE session SET cost = ?, tokens_input = ?, tokens_output = ?, tokens_reasoning = ?, tokens_cache_read = ?, tokens_cache_write = ?, model = ? WHERE id = ?`)
+        .run(0.15, 5000, 2000, 0, 3000, 1000, JSON.stringify({
+          providerID: 'anthropic',
+          id: 'claude-sonnet-4-20250514',
+          variant: 'high',
+        }), 'sess-1')
 
       insertMessage(db, 'msg-1', 'sess-1', 1700000001000, {
         role: 'assistant', modelID: 'claude-sonnet-4-20250514',
@@ -840,7 +845,7 @@ skipUnlessSqlite('opencode provider - session parsing', () => {
     expect(calls[0]!.cacheReadInputTokens).toBe(3000)
     expect(calls[0]!.cacheCreationInputTokens).toBe(1000)
     expect(calls[0]!.costUSD).toBeGreaterThan(0)
-    expect(calls[0]!.model).toBe('claude-sonnet-4-20250514')
+    expect(calls[0]!.model).toBe('anthropic/claude-sonnet-4-20250514')
     expect(calls[0]!.deduplicationKey).toBe('opencode:sess-1:session-level')
   })