[ScriptedAlchemy]

Model-written thread links with padding, such as < t3-thread://v2/environment/thread >, appear as raw internal URLs instead of thread links. Trim that padding before rendering assistant messages on mobile and web/desktop, while keeping strict link parsing and stored messages unchanged.

The shared normalization preserves code spans, fenced and indented code, invalid addresses, and blank-line boundaries. Regression coverage includes the opaque delegated-thread ID from the incident, spaces/tabs, LF/CRLF padding, labeled destinations, and title substitution.

Validation: focused regression tests and vp run check:changed main; iPhone 18 Pro simulator before/after verification confirms a titled thread chip, successful navigation to its target, and unchanged literal code. Web is covered through the shared parser checks; no live web session was run.

Before/after captures are saved locally at /tmp/t3-link-padding-evidence/before.png and after.png. GitHub image upload is unavailable in this session; no evidence assets are committed.

Implemented with Claude Opus 5.5 through the Claude Agent harness; reviewed, hardened, and verified by GPT-6-Astra through Codex.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 3cdc098

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR