v0.25.1

• Bumped the full Rust workspace, website package metadata, and public install snippets to 0.25.1.
• Fixed stale documentation site examples that still showed older crate versions on Getting Started and Installation pages.
• Kept GitHub Pages deployment in the tag-only release flow while aligning release guards to main.
• Added exact option expiration request support so option-data callers can request a specific contract expiration instead of only range-style filtering.
• Exported shared stock symbol helpers from alpaca-trade for downstream strategy and application code.
• Improved live tooling dotenv discovery by walking parent directories for the workspace environment file.
• Reduced generated TypeScript binding noise for option positions and tightened OptionStrat parsing around implicit quantities and non-custom build URLs.
• Carried forward the release workflow guard fix so tag releases validate against main, matching the current repository default branch.