RFC feat(08): application-form fields as a third /apply artifact (#212)

* feat(08): add application-form fields as a third /apply artifact

/apply produces a CV and a cover letter. Many applications need a third
thing: free-text typed into a portal. Graduate programs, large-employer
ATS systems and startup forms ask for self-introductions, structured
project entries, motivation questions and pitches under a hard character
limit - none of which either document covers, and all of which the
interviewer reads alongside the CV.

Governing rule: a form field selects from what is already true and
arranges it for the question asked. It never introduces a new claim.
All accuracy rules from 03 and 05 apply unchanged.

Covers three field types (self-introduction, structured project entries,
hard character limits), the output format (a plain .txt the candidate
pastes from, with counts stated and internal NOTE TO SELF blocks marked
as not-for-pasting), and a verification checklist.

Two places where form fields are stricter than a CV, because both are
easy to get wrong:

- Project entries carry a name and a role, so they read as ownership of
  the whole project in a way a terse CV bullet does not. Contributory
  work has to be scoped inside the description.
- Project dates are the dates of the project, not of the employment.
  Narrowing them is more accurate where the candidate can say when the
  project started - but never invent a boundary to improve the ratio.

Registers the file in SKILL.md (framework_version 1.0.1 -> 1.1.0) and in
the FRAMEWORK_FILES list in tools/check_upstream_updates.py, so it is
covered by the update check like every other framework file.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* fixup(08,apply): wire as optional /apply offer; align grounding to three-source union

- apply.md Step 6: offer the third artifact after CV/cover letter are
  produced, mirroring the /outcome house pattern for optional capabilities
  (offer, act only on yes, default output unchanged).
- 08-application-forms.md: ground claims against the framework's
  01-candidate-profile.md + master CV + CLAUDE.md union (per #185)
  instead of only 01, in both the governing rule and the checklist.

Per MadsLorentzen review on PR #212. Rebase onto merged #210 (the
tenure-check reference this file cites) still pending — #210 hasn't
landed on upstream/master yet.

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

tools/check_upstream_updates.py

@@ -28,6 +28,7 @@ FRAMEWORK_FILES = [
     ".claude/skills/job-application-assistant/05-cv-templates.md",
     ".claude/skills/job-application-assistant/06-cover-letter-templates.md",
     ".claude/skills/job-application-assistant/07-interview-prep.md",
+    ".claude/skills/job-application-assistant/08-application-forms.md",
     ".claude/skills/job-application-assistant/SKILL.md",
     "AGENTS.md",
 ]