wip: start tape identifier — init progress tracker

opus-4-6@McFiver

docs/plans/plan_feature-software-hashes_tape-identifier_implimentation.md

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+# WIP: Tape Identifier Dropzone
+
+**Branch:** `feature/software-hashes`
+**Started:** 2026-02-17
+**Status:** In Progress
+
+## Plan
+
+Implements the tape identifier feature from [docs/plans/tape-identifier.md](tape-identifier.md).
+
+Drop a tape file on the /zxdb page → client computes MD5 + size → server action looks up `software_hashes` → returns identified ZXDB entry.
+
+### Tasks
+
+- [ ] Add `lookupByMd5()` to `src/server/repo/zxdb.ts`
+- [ ] Create `src/utils/md5.ts` — pure-JS MD5 for browser
+- [ ] Create `src/app/zxdb/actions.ts` — server action `identifyTape`
+- [ ] Create `src/app/zxdb/TapeIdentifier.tsx` — client component with dropzone
+- [ ] Insert `<TapeIdentifier />` into `src/app/zxdb/page.tsx`
+- [ ] Verify on http://localhost:4000/zxdb
+
+## Progress Log
+
+### 2026-02-17T00:00
+- Started work. Continuing on `feature/software-hashes` at `e27a16e`.
+
+## Decisions & Notes
+
+- Uses RSC server actions (not API routes) to discourage bulk scripting.
+- MD5 computed client-side; file never leaves the browser.
+- No new npm dependencies — pure-JS MD5 implementation.
+
+## Blockers
+
+None currently.
+
+## Commits
+