fix(cms): normalize trailing slashes in page paths

[JonasJesus42]

Summary

CMS pages created in the admin with a path like /ofertas/datas-promocionais/ were effectively unreachable:

1. TanStack Router redirects /foo/ → /foo at the edge (307).
2. After the redirect, findPageByPath("/foo") had to match a block whose page.path was /foo/.

The existing matchPath in loader.ts happened to work for both forms due to a filter(Boolean) side-effect on split("/"), so the page DID render. But page.path was still stored with the trailing slash, which leaked into:

• src/sdk/sitemap.ts:87 — emitted sitemap URLs ending in /, which crawlers would then see 307 → wasted crawl budget and duplicate-URL noise.
• src/cms/resolve.ts:1438 — the path field on DecoPageResult carried the un-normalized value to callers (pagePath on the resolved page).

Real-world case that triggered this audit: pages-Datas Promocionais-670910 was created in admin with path: /ofertas/datas-promocionais/. TanStack site rendered it (lucky), but the original Fresh/Deno site 404d (no filter(Boolean) side-effect there).

Changes

• Add normalizePagePath(path) — strips a single trailing slash, preserves /.
• Apply in getAllPages() — every consumer now sees the canonical form.
• Apply in matchPath() — make the normalization explicit instead of relying on the implicit filter(Boolean) behavior.
• Unit tests covering: trailing slash on the block, trailing slash on the URL, interaction with :param routes, and getAllPages exposure.

Test plan

• npx vitest run src/cms/loader.test.ts — 8/8 pass (new file)
• npx vitest run — 75/75 pass, no regressions
• npx biome check src/cms/loader.ts src/cms/loader.test.ts — clean (1 pre-existing info on an unrelated line)
• npm run typecheck — same 47/48 pre-existing errors in scripts/migrate/, no new errors

🤖 Generated with Claude Code

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Summary by cubic

Normalize CMS page paths by stripping a trailing slash (except /) so routes match the router’s redirect and all consumers see a canonical URL. Fixes unreachable pages saved with a trailing slash and removes 307s from the sitemap and DecoPageResult.path.

• Bug Fixes
  • Added normalizePagePath(path) to strip a single trailing slash, preserving /.
  • Applied in getAllPages() so exposed pages use the canonical path.
  • Normalized both sides in matchPath() for explicit, consistent matching.
  • Added tests for trailing-slash URLs/blocks, param routes, and getAllPages() output.

^{Written for commit 4f53ee9. Summary will update on new commits.}