Support messages for setting session title, name, and color

[cboos]

List of "properties":

• custom-title (customTitle),
• agent-name (agentName),
• agent-color (agentColor),
• pr-link (prNumber, prUrl, prRepository),
• mode (mode)

It could be interesting to show the point where they are set.

Likewise, for version, model, cwd, gitBranch (attributes on most messages), it would be interesting to show the point where they change/

Examples

Line 1 of .../067ee208-cb06-4e58-b48c-228e1f2ff87d.jsonl is not a recognised message type: {"type":"custom-title","customTitle":"Main","sessionId":"067ee208-cb06-4e58-b48c-228e1f2ff87d"}
Line 2 of .../067ee208-cb06-4e58-b48c-228e1f2ff87d.jsonl is not a recognised message type: {"type":"agent-name","agentName":"Main","sessionId":"067ee208-cb06-4e58-b48c-228e1f2ff87d"}
Line 8 of .../067ee208-cb06-4e58-b48c-228e1f2ff87d.jsonl is not a recognised message type: {"type":"agent-color","agentColor":"orange","sessionId":"067ee208-cb06-4e58-b48c-228e1f2ff87d"}

{"type":"pr-link","sessionId":"5ec93f15-d651-432a-ab1b-a96171669461","prNumber":96,"prUrl":"https://github.com/daaain/claude-code-log/pull/96","prRepository":"daaain/claude-code-log","timestamp":"2026-04-19T18:30:11.705Z"}

Line 570 of /home/cboos/.claude/projects/-home-cboos-Workspace-github-daain-claude-code-log-main/20ddae6f-e4e5-4a68-a8d6-0c8e6a88554a.jsonl: unrecognized message type 'mode'

570: {"type":"mode","mode":"normal","sessionId":"20ddae6f-e4e5-4a68-a8d6-0c8e6a88554a"}

[cboos]

One more, just seen now:

5ec93f15-d651-432a-ab1b-a96171669461.jsonl: unrecognized message type 'pr-link' - skipping

{"type":"pr-link","sessionId":"5ec93f15-d651-432a-ab1b-a96171669461","prNumber":96,"prUrl":"https://github.com/daaain/claude-code-log/pull/96","prRepository":"daaain/claude-code-log","timestamp":"2026-04-19T18:30:11.705Z"}

See work/session-state-propagation.md.

[lifeinchords]

Seeing another unrecognized message type on 1.2.0, in the same vein: pr-link. Claude Code emits this whenever a PR is referenced or created during the session. A single archive run hit 110 of these warnings from heavy gh pr * activity, so this adds up fast in PR-heavy sessions.

Structure (sanitized):

{"type":"pr-link","sessionId":"<truncated>","prNumber":3,"prUrl":"https://github.com/<truncated>/<truncated>/pull/3","prRepository":"<truncated>/<truncated>","timestamp":"2026-04-19T17:19:54.494Z"}

Same fix pattern as the three in the OP: add a parser + renderer. A linked badge like PR #N → url would match how the gh CLI already refers to PRs.

[cboos]

From my todo list #73:

• Show transitions for cwd (now in ... directory) and gitBranch (now on ... branch)

This might be similar to what we need here, showing the transitions for title, name, color, pr-link...