One design language: every page, card and word at the home page's standard #9535

This pull does one item from #9433: the share cards. I'm leaving the rest for follow-up issues, since the earlier attempt on this issue (#9463) went red trying all of it at once.

What changed

• Every share card (repo, issue, pull, run, app, map, audit) now looks like the forge's own page card. src/web/og/card.ts no longer draws the kind label ("ISSUE", "PULL", "MAP", "AUDIT" and so on) or the 12px coloured strip down the left edge.
• The supporting stat line is now always muted grey. Titles use the same tight letter-spacing as the home page.
• I deleted the KIND_COLOR table. kind still picks which card is built, but no longer changes how it looks.
• Tests: test/og-card.test.ts now checks, for every card kind, that there is no kind label and no edge strip. I flipped the old assertions that expected the labels in test/og-route.test.ts and test/og-designs.test.ts to expect their absence.

Checks

• bun test test/og-*.test.ts passes (115 tests).
• bun x tsc --noEmit is clean.
• bun scripts/gate.ts showed no failure.
• I did not run scripts/design-lint.ts, because I didn't touch src/web/ pages.

Not done (each needs its own issue, small enough for one run):

• The docs/DESIGN.md principles in under 30 lines, and enforcing them in the design check.
• A test that fails any public page missing a title, description, og:* tags or canonical URL.
• A plain fallback for empty or jargon repo and app descriptions. I found no remaining " · live." suffix in the source.
• A completeness test for robots.txt, sitemap.xml, the manifest, security.txt, llms.txt, favicons and structured data.
• Rewriting the Tokens, Crew, Subscriptions and Usage settings pages.
• Moving the signed-in pages to the new language, with screenshots.
• Pointing the reviewer and the crew brief at the principles.

To try it: open /og/repo/<owner>~<name>.svg or /og/issue/<ref>.svg on the preview. The card should have no right-hand label and no left strip.

🤖 Generated with Claude Code

Closes #9433

This pull does one item from #9433: the share cards. I'm leaving the rest for follow-up issues, since the earlier attempt on this issue (#9463) went red trying all of it at once.

What changed

• Every share card (repo, issue, pull, run, app, map, audit) now looks like the forge's own page card. src/web/og/card.ts no longer draws the kind label ("ISSUE", "PULL", "MAP", "AUDIT" and so on) or the 12px coloured strip down the left edge.
• The supporting stat line is now always muted grey. Titles use the same tight letter-spacing as the home page.
• I deleted the KIND_COLOR table. kind still picks which card is built, but no longer changes how it looks.
• Tests: test/og-card.test.ts now checks, for every card kind, that there is no kind label and no edge strip. I flipped the old assertions that expected the labels in test/og-route.test.ts and test/og-designs.test.ts to expect their absence.

Checks

• bun test test/og-*.test.ts passes (115 tests).
• bun x tsc --noEmit is clean.
• bun scripts/gate.ts showed no failure.
• I did not run scripts/design-lint.ts, because I didn't touch src/web/ pages.

Not done (each needs its own issue, small enough for one run):

• The docs/DESIGN.md principles in under 30 lines, and enforcing them in the design check.
• A test that fails any public page missing a title, description, og:* tags or canonical URL.
• A plain fallback for empty or jargon repo and app descriptions. I found no remaining " · live." suffix in the source.
• A completeness test for robots.txt, sitemap.xml, the manifest, security.txt, llms.txt, favicons and structured data.
• Rewriting the Tokens, Crew, Subscriptions and Usage settings pages.
• Moving the signed-in pages to the new language, with screenshots.
• Pointing the reviewer and the crew brief at the principles.

To try it: open /og/repo/<owner>~<name>.svg or /og/issue/<ref>.svg on the preview. The card should have no right-hand label and no left strip.

🤖 Generated with Claude Code

I pushed a new commit that fixes the failed gate rule. I haven't seen the forge's re-run of the check on it yet.

The gate wanted a Try: line in a commit message for a change to src/web/og/card.ts. I couldn't amend the earlier commit without a force push, so I added an empty commit. Its message says: Try: open /og/repo/<owner>~<name>.svg on the preview; no kind label, no left strip.

The code is unchanged since the last push. The share-card tests (test/og-*.test.ts), tsc and the gate all passed locally before the first push.

The pull description stands as written in my earlier message.

Left #9433 open: 7 unticked items remain (docs/DESIGN.md opens with these principles in under 30 lines, with the home page and the Security settings page as worked examples, and the design check enforces what it can.; Every page has a meaningful <title>, description, og:title, og:description, og:image and canonical URL. A test fails any public page without them. Repository and app descriptions that are empty or jargon get a plain fallback, and a description no longer ends in " · live."; Share cards (src/web/pages/og.ts) match the home page's type and restraint. No "PAGE" label, nothing cut off mid-sentence, and no edge strip on the left. Each card is checked as an image in a test.; …).