feat: add 7 alt-chart bar builders (B19) (#220)

Adds seven information-driven bar builders to the **Alt-Chart Bars** family, the final batch of the family-deepening run. Indicator count **507 → 514**.

## Builders
All implement the `BarBuilder` trait (`update(Candle) -> Vec<Bar>`), emitting a data-dependent number of completed bars per candle.

| Builder | Driver | Bar fields |
|---------|--------|-----------|
| `RangeBars` | close | open, close, direction |
| `TickBars` | OHLCV | open, high, low, close, volume |
| `VolumeBars` | OHLCV | open, high, low, close, volume |
| `DollarBars` (Lopez de Prado) | OHLCV | + dollar |
| `ImbalanceBars` | OHLC | + imbalance, direction |
| `RunBars` | OHLC | + length, direction |
| `ThreeLineBreakBars` | close | open, close, direction |

## Touchpoints
Seven core modules (each with full unit tests), `mod.rs`/`lib.rs` (builders counted, bar element types on their own re-export lines), README family rows, Python/Node/WASM hand-written bindings for the variable-length output (Python tuples + `(k, N)` ndarray; Node `Vec<object>`; WASM array of objects), the `bar_builder_update_candle` fuzz target, dedicated Python + Node tests, the `BAR_BUILDERS` completeness exclusion, and CHANGELOG.

## Verification
- `cargo test -p wickra-core --lib` — 4207 passed
- `cargo test -p wickra-core --doc` — 464 passed
- `cargo clippy --workspace --all-targets --all-features -- -D warnings` — clean
- `npm test` (node) — 584 passed
- `pytest` (python) — 957 passed

bindings/node/index.d.ts

@@ -468,6 +468,54 @@ export interface PnfColumnValue {
   high: number
   low: number
 }
+export interface RangeBarValue {
+  open: number
+  close: number
+  direction: number
+}
+export interface TickBarValue {
+  open: number
+  high: number
+  low: number
+  close: number
+  volume: number
+}
+export interface VolumeBarValue {
+  open: number
+  high: number
+  low: number
+  close: number
+  volume: number
+}
+export interface DollarBarValue {
+  open: number
+  high: number
+  low: number
+  close: number
+  volume: number
+  dollar: number
+}
+export interface ImbalanceBarValue {
+  open: number
+  high: number
+  low: number
+  close: number
+  imbalance: number
+  direction: number
+}
+export interface RunBarValue {
+  open: number
+  high: number
+  low: number
+  close: number
+  length: number
+  direction: number
+}
+export interface LineBreakBarValue {
+  open: number
+  close: number
+  direction: number
+}
 export interface SessionHighLowValue {
   high: number
   low: number
@@ -5028,6 +5076,62 @@ export declare class PointAndFigureBars {
   reversal(): number
   reset(): void
 }
+export type RangeBarsNode = RangeBars
+export declare class RangeBars {
+  constructor(range: number)
+  update(close: number): Array<RangeBarValue>
+  batch(close: Array<number>): Array<RangeBarValue>
+  range(): number
+  reset(): void
+}
+export type TickBarsNode = TickBars
+export declare class TickBars {
+  constructor(ticks: number)
+  update(open: number, high: number, low: number, close: number, volume: number): Array<TickBarValue>
+  batch(open: Array<number>, high: Array<number>, low: Array<number>, close: Array<number>, volume: Array<number>): Array<TickBarValue>
+  ticks(): number
+  reset(): void
+}
+export type VolumeBarsNode = VolumeBars
+export declare class VolumeBars {
+  constructor(volumePerBar: number)
+  update(open: number, high: number, low: number, close: number, volume: number): Array<VolumeBarValue>
+  batch(open: Array<number>, high: Array<number>, low: Array<number>, close: Array<number>, volume: Array<number>): Array<VolumeBarValue>
+  volumePerBar(): number
+  reset(): void
+}
+export type DollarBarsNode = DollarBars
+export declare class DollarBars {
+  constructor(dollarPerBar: number)
+  update(open: number, high: number, low: number, close: number, volume: number): Array<DollarBarValue>
+  batch(open: Array<number>, high: Array<number>, low: Array<number>, close: Array<number>, volume: Array<number>): Array<DollarBarValue>
+  dollarPerBar(): number
+  reset(): void
+}
+export type ImbalanceBarsNode = ImbalanceBars
+export declare class ImbalanceBars {
+  constructor(threshold: number)
+  update(open: number, high: number, low: number, close: number): Array<ImbalanceBarValue>
+  batch(open: Array<number>, high: Array<number>, low: Array<number>, close: Array<number>): Array<ImbalanceBarValue>
+  threshold(): number
+  reset(): void
+}
+export type RunBarsNode = RunBars
+export declare class RunBars {
+  constructor(runLength: number)
+  update(open: number, high: number, low: number, close: number): Array<RunBarValue>
+  batch(open: Array<number>, high: Array<number>, low: Array<number>, close: Array<number>): Array<RunBarValue>
+  runLength(): number
+  reset(): void
+}
+export type ThreeLineBreakBarsNode = ThreeLineBreakBars
+export declare class ThreeLineBreakBars {
+  constructor(lines: number)
+  update(close: number): Array<LineBreakBarValue>
+  batch(close: Array<number>): Array<LineBreakBarValue>
+  lines(): number
+  reset(): void
+}
 export type AlphaNode = Alpha
 export declare class Alpha {
   constructor(period: number, riskFree: number)