RCA of a prod "Naukri returned 0" on an AI-Architect search: NOT a cursor issue (cursors removed;
naukri-feed is a date feed with no page param), NOT a city-name or keyword bug — the EXACT same input
flaked 0 then returned 15 on retry. The scrape-based actors (Naukri-feed, curious_coder LinkedIn)
intermittently return 0 under the site's anti-scrape rate-limiting, then recover.
Fix: _fetch_board retries a board ONCE (fresh) when it returns 0. One guard covers BOTH the Naukri and
LinkedIn intermittency (cleaner than per-board fallbacks). A genuinely-empty query just returns 0 again
(cheap). 67 tests pass (3 new: recovers transient 0, no retry on success, no infinite loop).
538d2fc5f3