Four rounds of CLAUDE.md reduction (255 -> 305 -> 179 -> 74 lines) turned
up one consistent finding: every stale fact was a *description* of code or
config, never a rule. Two had been written by Claude days earlier.
Documents the operational test ("does this line change what Claude does on
a task where it wouldn't otherwise open the relevant file?"), the tiering
table, why gotchas are the one category that cannot move to a read-on-demand
docs/exceptions/, invariants-over-enumerations, and how to tell when a
reduction pass has hit the floor.
Also surfaces the docs/solutions frontmatter fields in CLAUDE.md's
entry-point table so the store is greppable by module, not just browsable.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
m038andClaude Opus 5
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