- Structural fallback now emits the caller's exact bytes (a lossy UTF-8
decode or ANSI-stripped 'raw' is not raw); the decode-strip-parse-guard
pipeline moved into condense_stdin so it is unit-testable.
- Dropped the mailer-padding tolerance: a line shorter than the hunk's
prefix width now falls back instead of being guessed into context.
- Plain-diff fixtures recaptured with relative paths (no local usernames
or session ids); copy-only and mode-only sections get real fixtures and
a vanish-class test.
kylehgc