Add MATLAB live script documentation support

[Copilot]

Adds documentation rendering for MATLAB live scripts (.mlx binary format and R2025a plain-text .m format), invoked by relative file path from the config file. Comment blocks become documentation text; code blocks become highlighted MATLAB code.

Changes

Collection (handler.py)

• Detects path-based identifiers: any identifier ending in .mlx or containing / pointing to a .mlx/.m file is parsed via maxx.livescript.LiveScriptParser rather than the MATLAB symbol lookup
• Passes new parse_live_scripts config flag through to PathsCollection

Configuration (config.py)

• New parse_live_scripts: bool = False option — enables indexing .mlx files in PathsCollection so they can also be referenced by stem name

Rendering (rendering.py, live_script.html.jinja)

• New do_strip_livescript_comments filter strips %/% prefixes from R2025a comment lines before markdown conversion (no-op for binary .mlx text content, which is already clean)
• New live_script.html.jinja template iterates live_script.sections, rendering "text" sections via convert_markdown and "code" sections via highlight(language="matlab")
• AutorefsHook.get_context() handles the live_script object kind

Usage

# In any MkDocs page:
::: notebooks/demo.mlx
::: notebooks/analysis.m   # R2025a plain-text live script

[github-actions]

Test Results

0 files   -    10  0 suites   - 10   0s ⏱️ - 1m 22s
0 tests  -   252  0 ✅  -   252  0 💤 ±0  0 ❌ ±0 
0 runs   - 2 520  0 ✅  - 2 520  0 💤 ±0  0 ❌ ±0 

Results for commit 33e8871. ± Comparison against base commit 29343cd.

[codecov]

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