fix(docs): isolate TypeScript compiler API

[ScriptedAlchemy]

Summary

• run the website typecheck with native TypeScript 7.0.2 while rspress.config.ts imports a typescript-6 compiler-API alias
• convert the TypeDoc/twoslash TypeScript peers into scoped dependencies pinned to 6.0.3, preventing them from resolving TypeScript 7
• remove the temporary Dependabot major-version ignore and update the pin reference

Refs #612.

Local merge gate

Branch HEAD 5117aa75ed4bc96faa440fddee17c65609033200 contains current origin/main 46e8e7d25a3f7c0db26c8d13c1bbdf978cdcdc50.

• pnpm build && pnpm typecheck && pnpm lint && pnpm test:unit — passed; linted 1,421 files; 283 test files, 4,229 tests, 0 failures (4,223 passed, 6 skipped)
• pnpm --filter @agent-bundle/docs typecheck — passed under native TypeScript 7.0.2
• pnpm docs:site:build — passed; 110 sitemap pages, 0 broken links, 28,127 anchors checked, TypeDoc API generated, twoslash hover markup rendered
• pnpm install --frozen-lockfile — passed
• pnpm why typescript -r — TypeDoc/twoslash JS-API consumers resolve 6.0.3; website/root native typecheckers resolve 7.0.2; no peer dependency issues

The page count (110) and broken-link count (0) match #610's acceptance numbers.

Deslop

Deslop: GPT-5.6 Sol, 1 edit (removed a redundant package-extension layer from the final dependency wiring).

Self-review

Reviewer: Claude Fable 5.1 Thinking High.

• .pnpmfile.cjs was initially untracked while its checksum was in the lockfile: fixed by staging and committing it with the lockfile.
• docs/effect-conventions.md still described a website-wide TypeScript 6 pin: fixed to document native 7 plus the isolated 6.0.3 compiler API.
• Pin drift risk: the reference now explicitly requires updating the alias and scoped overrides together.
• Final pass on current origin/main: no merge blockers; patch scope is exactly the seven intended files and the pnpmfile checksum matches the lockfile.

No changeset: only private website and repository tooling/configuration changed (skip-changeset).

[changeset-bot]

⚠️ No Changeset found

Latest commit: 5117aa7

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[pkg-pr-new]

npm i https://pkg.pr.new/ScriptedAlchemy/agent-bundle@659

npm i https://pkg.pr.new/ScriptedAlchemy/agent-bundle/create-agent-bundle@659

npm i https://pkg.pr.new/ScriptedAlchemy/agent-bundle/rsc-markdown-stream@659

npm i https://pkg.pr.new/ScriptedAlchemy/agent-bundle/@agent-bundle/runtime@659

commit: a85e9f2