Tier 1: origin anchor, detents, theming, type-in editing, ImageKnob

- origin: bipolar anchor value — Arc from=center, Fader fill and
  LEDFader segments draw from origin instead of min/mid-travel
- detents + detentSize: magnetic snap while dragging (normalized
  space, wheel/keyboard unaffected); applyDetents exported
- DreamknobProvider + KnobTheme: accent/track/face/text/label/ticks/
  focusRing/fonts tokens with dark and light bases; every skin
  resolves defaults from the theme, instance props win
- editable + parseValue: double-click knobs (or click fader readouts)
  to type exact values; Enter/blur commits, Esc cancels, 1.2k parses;
  ValueInput + defaultParseValue exported; setValue added to context
- ImageKnob: film-strip sprite knob (KnobMan-style strips), vertical
  or horizontal, with focus ring, editing, value/label
- Docs: LED gallery cards for film-strip/bipolar/editing/theming,
  playground editable toggle, theming API section, README updates

packages/dreamknob/README.md

@@ -45,7 +45,8 @@ Every component shares one core:
 | `↑ → / ↓ ←` | ± one step (`Shift` = 10×) |
 | `PageUp/PageDown` | ± 10 % of range |
 | `Home/End` | min / max |
-| Double-click | reset to `defaultValue` |
+| Double-click | reset to `defaultValue` — or open the type-in editor with `editable` |
+| `Escape` | cancel an in-flight drag, restoring the start value |
 | Touch / pen | pointer capture, `touch-action: none` |
 
 All knobs render `role="slider"` with `aria-valuemin/max/now/text`.
@@ -59,6 +60,10 @@ All knobs render `role="slider"` with `aria-valuemin/max/now/text`.
 - `steps={5}` — evenly spaced detents (selector knobs).
 - `taper` — `linearTaper` (default), `logTaper` (frequencies), `powTaper(n)` (gain),
   or your own `{ toNormalized, fromNormalized }`.
+- `origin={0}` — bipolar anchor: arcs/fader fills draw from this value (pan, gain trim).
+- `detents={[0]}` + `detentSize` — magnetic snap points while dragging.
+- `editable` — double-click (knobs) or click the readout (faders) to type an exact
+  value; `parseValue` customizes parsing (`"1.2k"` → 1200 out of the box).
 - `onChange` / `onChangeStart` / `onChangeEnd` — gesture-aware callbacks.
 
 ## Prebuilt skins
@@ -74,10 +79,24 @@ import {
   SteppedKnob,  // detented selector (positions={['LP','BP','HP']})
   Fader,        // linear channel fader, vertical or horizontal
   LEDFader,     // segmented LED meter-fader with color zones
+  ImageKnob,    // film-strip sprite knob (KnobMan-style PNG strips)
   SegmentDisplay, // standalone seven-segment numeric display
 } from 'dreamknob'
 ```
 
+## Theming
+
+```tsx
+import { DreamknobProvider } from 'dreamknob'
+
+<DreamknobProvider base="dark" theme={{ accent: '#ff4d6b' }}>
+  {/* every control below inherits the tokens; instance props still win */}
+</DreamknobProvider>
+```
+
+`base="light"` swaps in light-background defaults. Tokens: `accent`, `track`, `face`,
+`text`, `label`, `ticks`, `focusRing`, `fontMono`, `fontUI`.
+
 Every skin takes the core props plus `size`, `label`, `showValue`, `unit`, `format`,
 and per-part color props (`color`, `trackColor`, `faceColor`, `bodyColor`, …).