Contract: one search. Code results are a section of the same page #632

Pillar: P1 Feed (umbrella #587). Contract: one of the duplicated screens the studio/dev split left behind. One run, fresh from today's main.

The job: find a repository, tell, change or line of code.

Survivor: one search page (src/web/pages/search.ts): apps and repositories, tells and changes, then code, as sections.

Removed in this same pull: the studio/dev branching in search.ts and the "Search the code ?mode=dev" escape.

The path: a person presses / anywhere to find something; primary action open a result; next that thing.

Acceptance.

• [ ] One renderer for this job, for every repository and every viewer; the other code and its tests are deleted, not hidden.
• [ ] Every old URL still answers (the survivor, or a redirect); ?mode=dev on it shows the survivor.
• [ ] Nothing the removed screen did is lost: the pull lists each thing it showed or did and where it lives now (or why nobody needs it).
• [ ] Minimal, not bare: one primary next action, white space at every width, nothing the person does not need now.
• [ ] Looks of the path at phone and desktop widths on the pull; the full check green.

Start from: src/web/pages/search.ts, src/web/palette.ts.

Must not touch: the release workflow, the chart, other repositories.