fix(specs): settle every workflow spec on python3, one Windows note at first use (#678)

* fix(specs): settle every workflow spec on python3 with one Windows note at first use

* fix(specs): finish python3 in the specs /apply reads; Windows note says run as python

- 04-job-evaluation (salary lookup), 05-cv-templates (verify_pdf x2) and
  CLAUDE.md now spell python3 like apply.md; framework_version bumped on 04
  (1.2.7) and 05 (1.4.8), each with its own Windows note at first use.
- The note now covers Windows generally: python3 is either the exit-49 Store
  stub or a separate Store Python without pip's packages, so run as python.
- tests/test_python_command_specs.py globs commands, skills and agents
  instead of naming four files.
- CHANGELOG entry matches the final scope.

* changelog: place the #678 entry under [Unreleased]

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Mads Lorentzen <madslorentzen_17@hotmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

.claude/skills/job-scraper/SKILL.md

@@ -143,6 +143,8 @@ For each new job, do a rapid fit check (NOT the full evaluation from `04-job-eva
 
 1. Derive each entry's key with the helper, never by slugifying in the moment:
 
+> **Windows:** run these tools as `python`, not `python3`. A python.org install ships no `python3`, so that name reaches the Microsoft Store alias, which either exits 49 with no output (#669) or starts a separate Store Python without the packages `pip` installed (such as pypdf). `.claude/settings.json` allows both spellings.
+
 ```bash
 python3 tools/job_key.py --company "<company>" --title "<title>" --url "<url>"
 ```