9 docs contained references to 'legacy' code/paths/encodings.
Removed the archaeology — these paths exist now, they're valid, just
document them without apology or historical commentary.
Pattern applied:
- Don't say '(legacy)' — just list the path in precedence order
- Don't say 'was handled by legacy X' — say 'not yet in colibri installer'
- Don't say 'legacy encoding' — just state 'must remain UTF-8'
- Describe what exists, state what's out of scope, skip the past
Also fixed Prettier drift in cost-dashboard.md, mother-hive.md (table
alignment, list spacing) that accumulated across recent merges.
Sam & Claude
