fix(F08-F10): machine-checkable evidence, honest templates, demoted GPA

F08 - evidence metadata
- Only 1 of 26 claims carried structured source/last_verified/ownership, which
  is why recency and reference checks could not run. Added an evidence_schema
  block and an evidence block on all 26 claims.
- 8 dates were recovered from each claim's OWN recorded text; the other 18 are
  written as the literal "unrecorded". Nothing was inferred. "unrecorded" means
  nobody wrote it down, NOT that the claim is unevidenced - most carry evidence
  in their free-text scope.
- Coverage is reported as an advisory warning, never a gate: failing on it would
  push a future session to invent dates to clear the run.

F09 - templates
- resume_template.tex asserted "12+ years of production software experience".
  It does not hold: canonical employment starts 2014-11 (~11y10m) and the
  VISIBLE chronology starts 2015-05 (~11y4m) because Capgemini is omitted.
  Now "over ten years", with the arithmetic and the no-date-math rule inline.
- cv_template.tex still carries page targets, rendered-line budgets and 2L/3L
  variants the project dropped. Banner-marked as the ACADEMIC legacy path so it
  is not reached for whenever a posting says "CV".

F10 - US GPA
- The modified Bavarian formula converts FOREIGN grades INTO the German system.
  Inverting it to produce a US GPA is not a recognised method, and the TUM
  source calls even its forward calculator orientation only.
- Fields renamed to final_grade_us_4pt_orientation_only with that caveat. The
  German grades remain the canonical facts. If a recipient publishes its own
  conversion, use theirs and record which was used.

Validator PASS (1 advisory), 31/31 tests.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qej5SBvhcbGXHwLqNWiskM

resume_builder/helpers/validate_resume_system.py

@@ -88,6 +88,21 @@ def canonical_checks(claims: dict, history: dict) -> tuple[list[str], list[str]]
     if duplicates:
         errors.append(f"historical output folders classified twice: {', '.join(duplicates)}")
 
+    # F08: evidence-metadata coverage is reported, never gated. "unrecorded" means nobody
+    # wrote it down - it does NOT mean the claim is unevidenced, and failing on it would
+    # push someone to invent dates to get a green run.
+    claim_list = claims.get("claims", [])
+    missing_block = [c.get("id") for c in claim_list if not c.get("evidence")]
+    if missing_block:
+        errors.append("claims without an evidence block: " + ", ".join(map(str, missing_block)))
+    undated = [c.get("id") for c in claim_list
+               if (c.get("evidence") or {}).get("last_verified") == "unrecorded"]
+    if undated:
+        warnings.append(
+            f"{len(undated)} of {len(claim_list)} claims have last_verified 'unrecorded' "
+            f"({', '.join(map(str, undated[:6]))}{', ...' if len(undated) > 6 else ''}). "
+            "Record a real date when one is confirmed; never infer one to clear this hint.")
+
     if claims["identity"].get("swiss_permit", "").startswith("UNVERIFIED"):
         warnings.append("Swiss permit type remains unverified; generators must ask before naming it")
     return errors, warnings