chore(quotesdb): add ticket for collapsible filter panel on browse page

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

quotesdb/.nbd/tickets/a6e8ba.md

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+title = "quotesdb/ui: collapsible filter panel on browse page"
+priority = 5
+status = "todo"
+ticket_type = "feature"
+dependencies = []
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+
+## Summary
+
+On the Browse Quotes page (`/browse`), move all filter controls (author, tag, date range) behind a collapsible "Filters" button. Filters are hidden by default and expand when the button is clicked.
+
+## Details
+
+### Filter Button
+- A single "Filters" button (or "Filters ▼" / "Filters ▲" to indicate state) sits above the quote list.
+- Clicking it toggles the filter panel open or closed.
+- The panel is collapsed by default when the page loads.
+
+### Filter Panel Layout
+Each filter occupies its own line inside the panel:
+
+1. **Author** — a text input labelled "Author:"
+2. **Tag** — a text input labelled "Tag:"
+3. **Date range** — displayed as:
+   `Date: after [date input], before [date input]`
+   Both date inputs are on the same line, after the "Date:" label.
+
+### Styling
+- All three filter rows must be visually consistent with each other (same label width, same input style, same spacing).
+- The panel and button should fit the existing site theme.
+
+## Acceptance Criteria
+- [ ] Filter controls are hidden by default on `/browse`
+- [ ] A "Filters" button toggles the panel open/closed
+- [ ] Author, tag, and date range each appear on their own line
+- [ ] Date range is labelled `Date: after [input], before [input]`
+- [ ] All three filter rows share consistent visual styling
+- [ ] Existing filter functionality (querying the API with author/tag/date params) is unchanged
+
+## Validation
+Run from `quotesdb/` root:
+```sh
+cargo fmt && cargo check && cargo clippy
+trunk build
+```