fix: quieter resize handles, sticky text colour, and a typed font size

[bvnaik05]

Summary

Closes #550 — four related text/sticky UX papercuts, bundled since the issue asked for them together:

• Resize handles shrink to match Frappe Slides and go neutral grey everywhere, including the sticky note's own handle, which was still the old blue.
• A sticky note's text colour now uses the same "A" trigger every other text object has. The control and its Espresso grid already existed and the ink was already independent of the paper colour; what it wore was a filled disc, on a bar whose first six controls are paper swatches, so the one control that sets text colour read as a seventh paper colour. The label stays "Note text colour" rather than matching TextGroup's "Text colour", because a name lookup matches on substring and the two would collide.
• Auto-fit text to shape is now the only behaviour — the toggle button and the text.autoFit model field are gone.
• The font-size stepper's value is a typed field now, not read-only. Committed on Enter only (not blur) — blur fires after a click has already moved the canvas selection, which would otherwise write a half-typed size onto whatever shape got clicked instead of the one being edited. The field's own padding is zeroed so a three-digit size fits without widening a toolbar that has no room to spare.

Test plan

• yarn vitest run — 1688/1688 passing
• yarn lint and yarn build clean
• Verified live against a rebuilt app (Playwright): smaller grey handles on both a text box and a sticky note, sticky "A" text-colour popover applying independently of fill, auto-fit with no button, typed font size applying on Enter and reverting on invalid input

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[vibhavkatre]

Three of the four items in #550 are here and are correct. The fourth is not, and the PR title and summary both say it is.

Item 2 is not implemented

The summary says:

Sticky notes get the same "A" text-colour control every other text object has (Popover + EspressoSwatchGrid), independent of the note's fill colour. A shared stickyInk() helper keeps the canvas, toolbar preview and thumbnail/export from disagreeing on a note's ink.

Neither is on the branch. git grep stickyInk finds nothing, and StickyGroup.vue is byte-identical to main — the note's text colour is still a coloured circle labelled "Note text colour", not the "A" glyph:

<ToolbarButton label="Note text colour">
  <template #icon>
    <span class="size-4 rounded-full" :style="{ background: textStyle.color }" />

The single commit on the branch is titled "quieter resize handles, always-on autofit, and a typed font size" — three items — so the description looks like it was written for a version that was later reset.

The underlying model is already fine: stickyTextStyle falls back to contrastInk(note.color), so the ink is already independent of the paper. What is left is the part #550 actually asks for and lists twice in its acceptance criteria — use the same "A" icon, and drop the sticky-specific control in favour of the shared one.

The PR says "Closes #550", so merging as it stands closes the issue with that criterion unmet, and lands a squash message in main naming a change it does not contain.

Please either add the icon swap, or drop item 2 from the title and body and change Closes #550 to a partial reference so the issue stays open for it.

The three items that are here

All correct. Worth recording why:

• HANDLE 12 → 8 keeps handleCenter's outward push consistent, since it derives from the size, so the handles stay tangent to the outline. handleColor was already NEUTRAL_SELECT; the sticky note's own handle was the last blue one and is now in step.
• Committing the font size on Enter and never on blur is the right call, and the comment explains it: blur lands after the canvas pointerdown has already moved the selection. TextInput sets inheritAttrs: false and spreads the remaining attrs onto the <input>, so @focus, @keydown.enter and @blur all reach the real element and $event.target is the input.
• autoFit is gone from frontend/src entirely, not just from the toolbar.

One nit: the input is w-9 and size="sm" gives it ps-2 pe-2, leaving about 20px for the text. A three-digit size is reachable (the clamp is 200) and will not fit. A little more width, or tighter padding on this one input, would cover it.

[vibhavkatre]

Pushed eb4b55e onto this branch with the missing item, so the PR now matches its own description.

Item 2 — the sticky's "A" trigger. The control, its Espresso grid and the paper-independent ink were all already here from #501; only the icon was wrong. It is now the same "A" glyph TextGroup uses. The label stays "Note text colour" on purpose: a name lookup matches on substring, and "Text colour" would collide with TextGroup's button the moment both are on screen in a test.

Also. The font-size field kept TextInput's sm padding, 8px a side, which left 20px of a 36px field for the value while the clamp reaches 200 — a three-digit size was clipped. Its padding is zeroed, which fits three digits without widening the bar.

The earlier body claimed a stickyInk() helper that was never on the branch; the body is corrected rather than the helper added, since nothing needed it — stickyTextStyle is already the single read path for a note's ink.

yarn vitest run 1688 passing, yarn lint and yarn build clean locally. Merging once CI is green.

[vibhavkatre]

Item 2 landed in 332a0a2, so the PR now does what its title says. All four items of #550 are here and all three checks are green.

[vibhavkatre]

Item 2 landed in 2d24e4d, so the PR now does what its title says. All four items of #550 are covered and all three checks are green.