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Diffstat (limited to '.dispatch')
| -rw-r--r-- | .dispatch/rules/isolation-over-dry.md | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/.dispatch/rules/isolation-over-dry.md b/.dispatch/rules/isolation-over-dry.md new file mode 100644 index 0000000..55ac13a --- /dev/null +++ b/.dispatch/rules/isolation-over-dry.md @@ -0,0 +1,12 @@ +# Rule: isolation over DRY + +Prefer self-contained, even DUPLICATED, code in each extension over a shared helper +that two+ extensions import. A shared module wired between sibling features is a +coupling smell — it breaks feature-as-a-library (P1) and ties their fates together. +Get consistency by sharing KNOWLEDGE in the harness (`.dispatch/rules`, skills, +`GLOSSARY.md`), never shared runtime code. +The ONLY sanctioned shared surfaces are the kernel ABI (host-provided, injected) and +typed contracts — NOT a new utility module between features. +When tempted to "extract a helper for consistency," stop: that is reputation-driven +DRY (P4). Duplicating a small function across the few features that need it is the +intended trade. |