Opinionated mode with community-standard column defaults

[kafkade]

Summary

Add lumpia.opinionated mode per ADR-008 — auto-determines wrapping column per language convention.

Convention Table

Language	Column	Source
Python	79	PEP 8
Rust	100	rustfmt
Go	80	convention
JS/TS	80	Prettier
Java	100	Google style
C/C++	80	Google style
Ruby	80	RuboCop
Git commit	72	Git convention

Precedence

Opinionated defaults are lower priority than explicit user settings.

Acceptance Criteria

• Setting registered in package.json
• Convention table for 15+ languages
• Explicit settings override opinionated defaults
• Also enables reformat: true and wholeComment: true

References

• ADR-008: Opinionated Wrapping Defaults

[kafkade]

Semver impact: Minor (0.x.0)

Adds opt-in opinionated mode with community-standard column defaults per language (PEP 8 for Python, rustfmt for Rust, etc.). Since it's disabled by default and doesn't change the existing column resolution, this is backward-compatible. If this were ever made the default, it would warrant a major bump.