* docs: spec + plan for tape-block copy + paste (#63)

* docs: register tapeSnapshot.test.ts topics in scenario ID grammar

* icons: add copy + clipboard (for tape snapshot actions)

* tapeSnapshot: scaffold module with serialize + minimal parse (R-snapshot-roundtrip)

* tapeSnapshot: parse catches JSON.parse errors (R-snapshot-parse-not-json)

* tapeSnapshot: validate format discriminator (R-snapshot-parse-wrong-format)

* tapeSnapshot: validate version field (R-snapshot-parse-unsupported-version)

* tapeSnapshot: validate tapes shape + position range (R-snapshot-parse-wrong-shape-tapes)

* tapeSnapshot: validate alphabets shape (R-snapshot-parse-wrong-shape-alphabets)

* tapeSnapshot: validate tapes.length === alphabets.length (R-snapshot-parse-length-mismatch)

* MachineView: wire copy + paste tape-snapshot actions (closes #63)

* MachineView: right-align copy/paste icons, relax paste to MAX_TAPES bound

- Reorder .tape-actions row to [Take Control] [Copy] [Paste]; pin the
  icons to the right via `justify-content: flex-end` so they stay anchored
  even when Take Control is hidden (MANUAL / RUNNING_CONTINUOUS / paused).
- Switch .take-control from `width: 100%` to `flex: 1` so it fills the
  remaining space without crowding the icon buttons.
- Drop the strict tape-count-must-match-current-machine guard on paste:
  with the user implicitly in MANUAL after auto-take-control, the mirror
  is the source of truth and any in-bounds snapshot should land. Replace
  with empty-snapshot lower bound + MAX_TAPES upper bound (the palette
  + worker hard limit). Import MAX_TAPES from caps.
- Add `await tick()` before `setAllFromMirror()` since paste can now
  change tape count (1→N), matching reloadWorker's pattern.
- Spec updated to reflect the new bounds + layout decisions.

* docs: catch CLAUDE.md + README.md up with logStore + tapeSnapshot

- Add `logStore.svelte.ts` to both lib/ trees (missed in #45 — the LogStore
  extraction landed but the file inventory was never updated).
- Add `tapeSnapshot.ts` to both lib/ trees (this PR).
- CLAUDE.md: extend MachineView's handlers list with onCopy/onPaste and a
  one-liner on the clipboard wiring + mirror-only paste semantics.
- README.md: mention copy/paste of tape-block state in the user-facing
  feature blurb so it's discoverable.

* test: wait for paused log entry before snapshotting baseline (E-continue-from-step)

The E-continue-from-step test was racing LogStore's 16ms flush (introduced
in #45). executionMode flips synchronously when the worker pauses, so the
Continue button is visible immediately — but `log.report('paused at …')`
is buffered behind the flush timer. Snapshotting pausedBefore right after
the Continue-visible check could capture 0 instead of 1; after Continue +
halt, the entry had finally flushed in and pausedAfter saw 1, failing the
"no new pauses" assertion.

Add an explicit `toBeVisible` wait on the paused log line before snapshotting
so the baseline accurately reflects the post-flush DOM state. Latent since
#45 merged; Playwright 1.60.0's timing changes made it deterministic on
parallel runs.

* chore: update dependencies to latest

Minor/patch bumps across the board (no major version changes):

- @codemirror/lang-javascript 6.2.0 → 6.2.5
- @codemirror/lint 6.8.0 → 6.9.6
- @codemirror/theme-one-dark 6.1.0 → 6.1.3
- @post-machine-js/machine 6.0.0 → 6.1.0 (debugger lockdown + instruction-derived state names)
- @tabler/icons 3.41.1 → 3.44.0
- @turing-machine-js/machine 6.0.0 → 6.1.0 (fixes malformed `^6..0` range)
- codemirror 6.0.1 → 6.0.2
- @playwright/test 1.50.0 → 1.60.0
- @testing-library/jest-dom 6.6.0 → 6.9.1
- @testing-library/svelte 5.2.0 → 5.3.1
- @tsconfig/svelte 5.0.4 → 5.0.8
- @types/node 25.6.2 → 25.8.0
- @vitest/coverage-v8 4.1.5 → 4.1.6 (sister of vitest)
- eslint 10.3.0 → 10.4.0
- svelte 5.0.0 → 5.55.7
- svelte-check 4.0.0 → 4.4.8
- tslib 2.8.0 → 2.8.1
- typescript-eslint 8.0.0 → 8.59.3
- vite 8.0.11 → 8.0.13
- vitest 4.1.5 → 4.1.6 (paired with @vitest/coverage-v8 per peer constraint)

No config changes required. All gates green: check / lint / 77 unit tests /
4 E2E tests / production build.

* Bump to 1.0.0-alpha.14