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Key Insight

Claude Code shipped five releases between v2.1.144 and v2.1.150 (May 19-24 2026). The headline changes are: (1) background sessions (--bg) now pin to stay alive when idle and restart in-place on updates; (2) /simplify was renamed /code-review with an added --comment flag that posts inline GitHub PR comments via mcp__github_inline_comment__create_inline_comment; (3) /usage now shows per-category breakdown (skills, subagents, plugins, per-MCP-server); (4) v2.1.148 hotfixed exit-code-127 regression in Bash tool introduced by v2.1.147; (5) "extra usage" renamed to "usage credits" across all CLI copy.

v2.1.147 also added: resumed sessions now keep their /model choice (no more model drift on resume); auto-updater retries transient network failures and reports OS error codes on failure.

Action Items

• Pin background sessions for TITAN's scheduled skills that should survive idle windows (use Ctrl+T in claude agents view).
• Wire /code-review --comment into FORGE's CI gate — it spawns 4 parallel review agents, deduplicates, scores confidence, and only posts items >= 80% confidence as inline PR comments.
• Run /usage after any heavy /feed or /forge session to see which MCP servers are consuming quota.
• If any TITAN scheduled task uses Bash tool on CC v2.1.147, verify it has been auto-updated to v2.1.148+ (exit-127 regression affects all Bash calls on some installs).

Relevance

• TITAN capabilities: /code-review --comment is a direct upgrade path for FORGE's review step — replaces ad-hoc gh PR comment scripting with a scored, parallel agent approach.
• Background session pinning directly supports TITAN's long-running scheduled tasks (/feed, /dream, /forge) that should not drop when idle.