[ZeroPoint95]

Changes

• codeaf web fetch now sends r.jina.ai's no-cache header (X-No-Cache: true) on every fetch, keyed or not, so the reader cannot answer from its 3600s page cache by default.
• When the reader still serves its cache (X-Cache: HIT), the fetch discards the snapshot and GETs the target directly — codeaf User-Agent, 8 MiB bounded read, HTML stripped to text — and returns an error naming the fallback instead of the snapshot when the direct fetch fails or comes back empty.
• Adds unit tests for the no-cache ask (keyed and unkeyed), the HIT-fallback matrix (stripped direct text, 500 names the fallback, empty body is an error), and a change entry invalidating the belief that codeaf web fetch https://example.com returned the real page rather than the stale cache.
• Final change: 3 files, +238/−0.

Closes #1771.

Validation

• Passed locally: cd . && go test -count=1 ./internal/search/.
• Passed locally: cd . && go test -count=1 -run 'TestJina' -v ./internal/search/ 2>&1 | grep -E '^(=== RUN|--- (PASS|FAIL)|PASS|FAIL|ok)' ; echo "PIPE_EXIT:${PIPESTATUS[0]}".
• Passed locally: cd . && go test -count=1 -race ./internal/search/.
• Proof · 8 of 8 claims shown locally. GitHub CI is checked after publishing.
• ✓ The search package's tests pass fresh (-count=1), including all 9 jina tests: the 4 pre-existing (TestJinaFetch, TestJinaFetchRejectsNonURLs, TestJinaFetchErrorStatus, TestJinaFetchIsCappedByTheRenderer) whose bodies are unedited in the diff (additions only), and the 4 new ones for the change plus TestJinaSearchResultsParsesBlocks.
• ✓ The search package is race-clean with the new fallback tests' shared serve() base-URL pattern.
• ✓ Vet, gofmt, the changelog gate and the name/manual laws stay green: the change leaves the tree buildable and well-formed.

by codeaf factory

Factory-Approval: evt_b7b18ebb @ZeroPoint95 7a4c722