E13: add the WASM quickstart and the data-layer wiki page

The wiki had quickstarts for Python, Rust, and Node but none for the
WebAssembly binding, and the wickra-data crate (CSV reader, tick
aggregator, resampler, Binance feed) was not documented anywhere.

- Quickstart-WASM.md: install via npm, building with wasm-pack, and
  streaming/batch/multi-output usage in a browser or bundler.
- Data-Layer.md: the wickra-data crate — CandleReader, TickAggregator
  (including the opt-in gap fill), Resampler/resample_all, and the
  feature-gated Binance live feed.
- Home.md links both from the wiki contents list.

docs/wiki/Home.md

@@ -45,6 +45,12 @@ Release notes and tagged builds:
 - [Quickstart: Node](Quickstart-Node.md) — `npm install wickra`, basic
   `SMA` and `MACD` calls, and the current Windows install caveat
   (`wickra-win32-x64-msvc@0.1.4` is held by the npm spam filter).
+- [Quickstart: WASM](Quickstart-WASM.md) — `npm install wickra-wasm`,
+  building with `wasm-pack`, and running indicators client-side in a
+  browser or bundler.
+- [Data Layer](Data-Layer.md) — the `wickra-data` crate: the CSV reader,
+  the tick-to-candle aggregator, the multi-timeframe resampler, and the
+  Binance live feed.
 - [Streaming vs Batch](Streaming-vs-Batch.md) — the conceptual difference
   between Wickra's O(1) `update` and the recompute-everything loops in
   batch-only libraries, with the benchmark numbers from the project README.