feat(ui): accessible text-size (shortcuts + header) + locally-generated capture path (0.3.15-rc.7)

[unforced]

Two follow-ups bundled per the dispatch brief — both touch the same chrome / Capture surfaces. Closes #127 + #126.

#127 — text-size accessible from the editing surface

Aaron flagged: "usually I'm in the middle of typing a note when I want to increase the size" — Settings-only is wrong UX.

Shipped:

• Keyboard shortcuts (Cmd+= / Cmd+Plus / Cmd+- / Cmd+0). Bound once at the app root via TextSizeShortcutsMount so the listener doesn't double-bind when the mobile menu mounts a second TextSizeControl. Ignored when Shift/Alt held or no modifier.
• Header chrome — new TextSizeControl ("Aa" button + popover) next to existing chrome (Install / Theme). Three options with a ✓ on the active row. Lives on both desktop and mobile menu so phones (no keyboard) keep the path.
• Same-tab sync — CustomEvent("notes:text-size-change") keeps the popover's active row in sync when a shortcut or sibling control changes the size (the storage event only fires cross-tab).
• New helpers nextTextSize / previousTextSize in lib/text-size.ts, mirroring nextTheme's shape. Direction is explicit at the call site.

#126 — Capture path generated locally + pre-filled

Aaron flagged: today's "vault auto-assigns" framing is wrong — vault doesn't have a path-generation workflow, the rule lives in Notes. Make it honest.

Shipped:

• quickPath() helper next to memoPath() in lib/capture/recorder.ts. Same <root>/YYYY/MM-DD/HH-MM-SS shape under Notes/ so quickly-captured text and voice memos read as parallel concepts.
• Capture pre-fill — pathOverride state is seeded with quickPath() on mount. Operator sees the generated path the moment they expand More fields. They can accept, edit, or clear.
• Escape valve preserved — clearing the input falls back to the rc.6 behavior (text → vault-picks, audio-only → memoPath()). Pinned by a new test.

Behavior changes (worth flagging for review)

• Text-only captures now land at Notes/<date>/<time> by default (was: vault-assigned).
• Audio captures with no override now also land under Notes/ (was: Memos/). Clearing the input restores the Memos/ rule.
• Combined text+voice captures now land at Notes/<date>/<time> (was: vault-assigned).

If Aaron wants audio captures to keep going to Memos/ by default (regardless of the pre-fill being non-empty), the fix is a phase-aware pre-fill — pre-fill switches to memoPath() when audio is staged AND the user hasn't manually edited. Flag in review if that's the preference.

Design call (re-flagging from my ack)

The brief said "My lean is in-More-fields pre-filled — keeps the focused-textarea UX, but the path is no longer hidden", while issue #126 acceptance reads "Pre-fill the path input visibly (not behind 'More fields')". I went with the brief's lean (in-More-fields pre-filled) because the textarea-first UX in audit §3 #12 is north-star. If you want it surfaced above the textarea as an always-visible slim affordance instead, flag it in review and I'll move it.

Patterns check

• TextSizeControl + TextSizeShortcutsMount collocate as one feature module — the visible affordance and the global listener are the same concept, even though they have to be mounted at different DOM positions.
• Same-tab CustomEvent pattern is new for this codebase — adds explicit comment about why storage alone isn't enough. Mirror of cross-tab sync but for same-tab; not a clash with existing patterns.
• quickPath() mirrors memoPath() shape exactly so the two helpers are interchangeable for future "configurable path rule" work (notes#126 mentions per-vault override as a future).

Tests

• text-size.test.ts: +2 (cycle direction helpers).
• TextSizeControl.test.tsx: +12 (button + popover behavior, keyboard handlers across Cmd+= / Cmd+Plus / Cmd+- / Cmd+0 / Shift-rejection / no-modifier-rejection, same-tab sync between shortcut and popover).
• recorder.test.ts: +1 (quickPath shape).
• Capture.test.tsx: +2 (pre-fill is editable + saved; audio-only memoPath escape valve when path cleared). Existing assertions updated where pre-fill changed observable behavior.

Full gate: 81 test files / 741 tests pass (+17 from this PR; was 724 in rc.6 + F1 fold). Typecheck clean, lint clean, build green (1563 KiB precache).

End-to-end smoke

parachute restart notes clean. Bundle ships TextSizeControl, quickPath, the new keymap handler. Browser test plan below.

Test plan

• Header: "Aa" button visible next to Theme toggle. Click → popover with Default / Larger / Largest. Click Larger → text scales up live, popover closes, ✓ moves to Larger.
• Cmd+= / Cmd+- cycle the size while typing in /capture. Cmd+0 resets.
• Shift+Cmd+= does NOT cycle (avoids stomping + in markdown tables).
• Mobile menu (narrow viewport, hamburger): "Aa" button present in the menu's chrome row. Tap → same popover.
• Settings → Text size dropdown still works, and changing it there updates the header popover's ✓ (cross-surface sync).
• /capture → expand More fields → Path input is pre-filled with Notes/<today>/<time>. Edit to a custom path → save → new note lands at the custom path. Clear path → save text-only → vault picks (rc.6 behavior). Clear path → record audio only → memo lands under Memos/<date> (rc.6 escape valve).
• /new → still renders NoteNew (heavy form with attachments) — untouched.

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