Remove the inert --force CLI flag

[TheGreatAxios]

Summary

Removed the inert --force CLI plumbing (Config/UnconfiguredConfig/help/onboarding/eval scripts/fixtures) and updated ARCHITECTURE/IMPLEMENTATION/TUI/CHANGELOG. PRODUCT.md is intentionally untouched (owned by CL-7650).

Verification

• bun run typecheck - exit 0
• Focused suite: 159 pass, 0 fail across config/session/eval/exec tests
• bun run check - blocked by known pre-existing main failures (unrelated to this change):
  • createOptimizedContextStore load > the next write heals a torn base tail so reload is stable
  • createOptimizedContextStore unpublished rewrite > git commit failure after rewrite lands keeps load on HEAD
  • assembleChatAgent > omits evidence archive when no holder is provided
  • assembleChatAgent > getWorkdir and getCompactor run at buildAgent time, not assemble time

Fixes CL-7674

[linear-code]

CL-7674

[TheGreatAxios]

Critic · Request changes

Parser, onboarding argv re-inject, and evals no longer carry --force. Remaining --force hits are git/rm/worktree, not the CLI flag.

Findings

• docs/PRODUCT.md:86 — stale picker-filter instruction now errors. Same file already says the picker includes completed sessions.

[TheGreatAxios]

Review · Request changes

--force is gone from CLI parsing, Config, help, evals, and tests. PRODUCT.md still tells operators to pass it.

Findings

• docs/PRODUCT.md:86 — Resume section still says pass --force to include failed and done. That now hits unrecognized flag in loadConfig. Other docs and CLI_HELP_TEXT were cleaned.

Notes

GitHub blocks request-changes on own PRs, so this is a comment with that verdict.