fix(terminal): linear-time link-provider regex; always allow blob workers in CSP

cmdPattern's empty-matchable unbounded arg group backtracked exponentially
on wrapped heredoc/table lines — hovering one froze the tab for minutes.
Non-empty tokens + bounded reps make it O(n); regression test extracts the
shipped patterns and pins timing on the real killer shapes.

worker-src 'self' blob: is now unconditional so terminal-ui's _safeYield
tick worker (throttling escape) isn't CSP-blocked on non-gesture installs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/templates/case-template.md

@@ -56,42 +56,3 @@ This session is managed by Codeman and runs inside tmux (`CODEMAN_MUX=1` confirm
 - NEVER kill your own session: no `tmux kill-session`, `pkill tmux`, or `pkill claude`.
 - The session persists across disconnects — your work is safe.
 - Hooks may auto-format or validate after writes; unexpected tool behavior usually means a hook ran. Keep working.
-
-## Ralph Loop (Codeman Autonomous Mode)
-
-Start: `/ralph-loop:ralph-loop` · Cancel: `/ralph-loop:cancel-ralph` · Help: `/ralph-loop:help`
-
-You are in a Ralph loop when the prompt contains a completion phrase (e.g. `<promise>COMPLETE</promise>`). While looping:
-
-- Work incrementally: one sub-task at a time — implement, verify, commit, move on.
-- Fix failing tests and lint errors before starting the next task.
-- Check `git log --oneline -10` / `git diff HEAD~1` before retrying an approach that already failed.
-- Keep testing to ~20% of total effort; prioritize implementation. Don't refactor working code or add unrequested
-  features as busy work.
-- If the prompt sets a minimum duration (e.g. "work for 4 hours"), record the start time (`date +%s`) and, when the
-  primary tasks finish early, keep generating useful related work (edge cases, coverage, docs, cleanup, hardening)
-  until the minimum time is reached.
-
-Output the completion phrase ONLY when every requirement is verifiably done: all tests pass, lint is clean, the build
-succeeds, and changes are committed. Never output it early — and never withhold it for busy work once everything is
-genuinely done.
-
-### RALPH_STATUS block (required)
-
-End EVERY response during a Ralph loop with exactly this block — Codeman parses it to track the loop:
-
-```
----RALPH_STATUS---
-STATUS: IN_PROGRESS | COMPLETE | BLOCKED
-TASKS_COMPLETED_THIS_LOOP: <number>
-FILES_MODIFIED: <number>
-TESTS_STATUS: PASSING | FAILING | NOT_RUN
-WORK_TYPE: IMPLEMENTATION | TESTING | DOCUMENTATION | REFACTORING
-EXIT_SIGNAL: false | true
-RECOMMENDATION: <one line: what to do next>
----END_RALPH_STATUS---
-```
-
-- `EXIT_SIGNAL: true` only when ALL tasks are verifiably done — then also output the completion phrase.
-- `STATUS: BLOCKED` when you need human input; describe the blocker in RECOMMENDATION.
-- Never set `EXIT_SIGNAL: true` while tests are failing.