feat(trend-reports): make HTML report consume full page width

[Kalindi-Dev]

Summary

• Removed the max-width: 1200px CSS constraint from the body element in the trend HTML report renderer
• Changed margin: 0 auto to margin: 0 so the report now fills the entire browser viewport width
• Updated the example trend-report.html file to reflect the same change

Changes

File: scripts/aidlc-evaluator/packages/trend-reports/src/trend_reports/render_html.py

• body CSS: removed max-width: 1200px; margin: 0 auto → replaced with margin: 0

File: scripts/aidlc-evaluator/packages/trend-reports/examples/trend-report.html

• Same CSS update applied to the pre-generated example report

Build and test results

• uv run pytest packages/trend-reports/tests/ -v → 145 passed, 1 warning ✅
• Lint (uv run ruff check packages/trend-reports/) → 1 pre-existing error (qual_status unused variable in render_html.py:240, unrelated to this change) — was already failing before this PR

Decisions made

The only constraint limiting the report width was max-width: 1200px on the body element. Removing it (along with the centering margin: 0 auto) allows the report to span the full viewport. The responsive breakpoint at 768px and all other layout CSS remain unchanged.

Agent notes

What went well: The change was minimal and precise — one CSS property to remove. The codebase has good test coverage (145 tests) and the change was validated quickly.

What was difficult: mise run build and mise run lint didn't work from the repo root (no tasks defined there); the actual tools are uv run pytest and uv run ruff from scripts/aidlc-evaluator/.

Patterns/conventions discovered:

• The project uses uv for Python dependency management with a workspace structure under scripts/aidlc-evaluator/
• CSS is embedded directly as a string in render_html.py — no external stylesheet files
• The examples/trend-report.html is a pre-generated snapshot that needs to stay in sync with render_html.py

Suggestions for future tasks:

• Consider adding a mise run build task in the repo root that delegates to uv commands
• The pre-existing qual_status lint warning in render_html.py:240 should be cleaned up

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