## 1. Implementation
- [x] 1.1 Add OpenSpec delta requirements for transcript line workflow rules.
- [x] 1.2 Extend workflow triggers, condition parameters, template model, and `set_property` support for transcript lines.
- [x] 1.3 Route live transcript appends and finished transcript rewrites through transcript line workflow transformation.
- [x] 1.4 Add the local profanity redaction rule.
- [x] 1.5 Update workflow engine documentation and configuration docs.

## 2. Verification
- [x] 2.1 Add behavior coverage for transcript line trigger matching, conditions, templating, and line mutation.
- [x] 2.2 Run focused workflow/recording tests.
- [x] 2.3 Run `openspec validate add-transcript-write-workflow-rules --strict`.