Collection chooser dialog: fix TC-icon/menu overlap, folder path, footer (BL-16548)

[hatton]

Follow-up UI tweaks from Heather's QA pass on the Open / Create Collections dialog (the BL-16548 redesign).

Changes

• Team-collection icon no longer hidden by the "…" menu. The team icon sat at the top-right of the title row — the same corner where the hover "…" menu button appears — so the button covered it. Moved the icon down into the left of the metadata row (beside the book count).
• "…" menu shows the collection folder, not the .bloomCollection file. Backend now returns a folderPath field; the card displays that (falling back to deriving it from path for stories/tests).
• Footer contrast. Darkened the footer band (#fafafa → #f0f0f0, border #eee → #e0e0e0) so it's clearly distinguishable from the white dialog body.

Not included (deliberately)

Heather also reported that only 10 collections show at a time. That's the maxMruItems = 10 cap in CollectionChooserApi, but it's an intentional "most recently used" limit and changing it is a design decision (and has an eager-per-card book-count perf cost), so it's left out of this PR.

Ref: https://issues.bloomlibrary.org/youtrack/issue/BL-16548

Devin review

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This change is 

[greptile-apps]

Greptile Summary

Three focused follow-up UI fixes for the Open/Create Collections dialog after a QA pass. All changes are additive and backward-compatible — the existing handleOpenInFileExplorer still posts props.path (the .bloomCollection file), which the backend HandleOpenCollectionFolderInExplorer already handles by detecting whether the path is a file or directory.

• TeamCollectionIcon relocation: removed from the title row (where it competed with the "…" button) and placed as the first item in the metadata row with flex: none, consistent with the existing gap: 10px and align-items: center on metadataRowStyle.
• Folder path in menu: folderPath was already computed in MakeCollectionInfoObject — the change simply includes it in the JSON response; the frontend falls back gracefully via a regex that correctly handles both Unix and Windows path separators.
• Footer contrast: two CSS values bumped from near-white to a slightly darker shade.

Important Files Changed

Filename	Overview
src/BloomBrowserUI/collection/CollectionCard.tsx	Moves TeamCollectionIcon from the title row into the metadata row, adds folderPath derivation and display in the "…" menu. Logic is sound; fallback regex handles both Unix and Windows separators.
src/BloomBrowserUI/collection/CollectionChooserDialog.tsx	Two-line CSS tweak to darken footer background and border — straightforward and safe.
src/BloomExe/web/controllers/CollectionChooserApi.cs	Exposes the already-computed folderPath variable in the JSON response — a one-line addition with no behavioral side effects.

_{Reviews (1): Last reviewed commit: "Merge remote-tracking branch 'origin/mas..." | Re-trigger Greptile}

[hatton]

[Claude Opus 4.8] Consulted Devin on 2026-07-16 17:12 UTC up to commit 368a9740c8558d0fb535a0d63c4e941a404e3cbd. Result: 0 Bugs, 0 Investigate flags (2 Informational observations only — not actionable). CI/other bots: see checks. No findings to mirror.