feat: list jwks-client and release-scope, with brand marks

[lesnik512]

Adds two published projects to the org profile, the site catalog and the brand kit. Neither was listed yet.

Project	Section	PyPI	Mark
jwks-client	Microservices, HTTP & messaging, after httpware (it fetches keys through httpware)	0.1.0	a key: the signing key a JWKS publishes
release-scope	Utilities, in alphabetical order	0.3.0	a magnifier over a list of pending changes

Each row uses the repo's one-liner exactly as its GitHub description and pyproject description give it (MD1).

Changes

• profile/README.md and docs/index.md: one row and one catalog bullet per project.
• scripts/check_site_content.sh: checks the two new links.
• brand/build/symbols.py: new key and scope symbols, drawn in gold only, so the no-cream-on-transparent invariant holds on dark surfaces.
• brand/build/projects.py and tests/test_projects.py: both repos registered in the manifest and in EXPECTED_REPOS.
• brand/projects/{jwks-client,release-scope}/: generated with just sync-assets. Re-rendering left every existing asset byte-identical. Neither repo has a docs site, so neither gets a social card and neither goes in DOCS_REPOS.

Testing

• pytest: 169 passed with rsvg-convert installed, so the PNG assertions ran instead of skipping.
• Site: mkdocs build --strict passes, and check_site_content.sh reports all 19 project links present.