tfe: redirect internal metadata links from /repertoire to /search

redirect internal metadata links from /repertoire to /search, add query param for search bar prefill, fix filter visibility on desktop

 redirect metadata links from /repertoire to /search, prefill search bar, fix filter visibility

 link metadata to /search, preserve keyword filter in form, show active keyword chip

TODO.md

@@ -50,3 +50,4 @@
 - [x] Fix: locked_year cleared on edit — edit dialog didn't populate the field, so any edit cleared the locked academic year
 - [x] Fix repertoire Années column: sort reverse chronological (newest first) instead of ascending alpha
 - [x] TFE website embed: wrap iframe + button in overlay-style div with "Site web" pill badge on left corner, clearer link text
+- [x] Redirect internal metadata links on TFE page from /repertoire to /search (orientation, AP, finalité, year, keywords); add query= for search bar prefill; fix filter <details> visibility on desktop; add keyword to filterKeys badge; add hidden keyword input + visible chip to filter form so keyword filter survives form submission