chore: prepare v1.0.6 release

Align the Rust, Python, WASM, Conda, docs, and lockfile version markers to 1.0.6 so the published artifacts and release automation agree on a single release number.

Add a proper 1.0.6 changelog entry in both CHANGELOG.md and the docs release notes, covering the pre-push gate, expanded Rust and WASM surface, benchmark refresh, and CI hardening work shipped since v1.0.4.

Validate the release preparation with the repo-managed pre-push suite so version, changelog, Rust, Python, docs, WASM, and API-manifest checks all pass before tagging.

Cargo.lock

@@ -207,7 +207,7 @@ checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
 [[package]]
 name = "ferro_ta"
-version = "1.0.4"
+version = "1.0.6"
 dependencies = [
  "criterion",
  "ferro_ta_core",
@@ -222,7 +222,7 @@ dependencies = [
 
 [[package]]
 name = "ferro_ta_core"
-version = "1.0.4"
+version = "1.0.6"
 dependencies = [
  "criterion",
  "wide",