session-memory: map signals to catalog recommendations via covers (WP-0010 follow-up)

Closes the gap where recurring_error suggestions showed generic 'Investigate'
instead of the curated recommendation. Added a covers[] field to SolutionPattern
(lowercase substrings a pattern's recommendation also applies to) + Catalog.find_for
(exact key first, then covers match against signal key+locus). Retro now resolves
recommendations through find_for. Tagged the read-before-edit pattern with
covers=['file has not been read','modified since read','file_not_read'] (v1.0.1).
Live: file-not-read suggestions across all repos now inherit 'Read the file before
Edit/Write'. 6 new tests; suite 158/158.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

session_memory/retro/last_retro.md

@@ -1,5 +1,5 @@
 # Weekly Coding Retro  (2026-05-08 → 2026-06-07)
-_23 real sessions · generated 2026-06-07T17:14:00Z_
+_23 real sessions · generated 2026-06-07T19:07:51Z_
 
 ## Top improvement suggestions (cross-flavor first, ≤3 per repo)
 - **net-kingdom** (high, score=54.0) [CROSS-FLAVOR]: cross-flavor problem: recurring error — Investigate recurring error on make: *** [makefile:<n>: fix-consistency] error <n>
@@ -14,18 +14,18 @@ _23 real sessions · generated 2026-06-07T17:14:00Z_
 - **flex-auth** (high, score=441.0): problem: schema thrash — Load the tool schemas you'll need once, up front
 - **infospace-bench** (high, score=441.0): problem: schema thrash — Load the tool schemas you'll need once, up front
 - **ops-bridge** (high, score=441.0): problem: schema thrash — Load the tool schemas you'll need once, up front
-- **activity-core** (high, score=290.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has not been read yet. read it first before writing to it.<<path>>
-- **citation-evidence** (high, score=290.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has not been read yet. read it first before writing to it.<<path>>
-- **infospace-bench** (high, score=290.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has not been read yet. read it first before writing to it.<<path>>
-- **issue-facade** (high, score=290.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has not been read yet. read it first before writing to it.<<path>>
-- **railiance-apps** (high, score=290.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has not been read yet. read it first before writing to it.<<path>>
-- **state-hub** (high, score=290.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has not been read yet. read it first before writing to it.<<path>>
-- **the-custodian** (high, score=290.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has not been read yet. read it first before writing to it.<<path>>
-- **vergabe-teilnahme** (high, score=290.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has not been read yet. read it first before writing to it.<<path>>
-- **artifact-store** (medium, score=78.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has been modified since read, either by the user or by a linter. read it again before attempting to write it.<<path>>
-- **issue-facade** (medium, score=78.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has been modified since read, either by the user or by a linter. read it again before attempting to write it.<<path>>
-- **railiance-apps** (medium, score=78.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has been modified since read, either by the user or by a linter. read it again before attempting to write it.<<path>>
-- **state-hub** (medium, score=78.0): problem: recurring error — Investigate recurring error on <tool_use_error>file has been modified since read, either by the user or by a linter. read it again before attempting to write it.<<path>>
+- **activity-core** (high, score=290.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **citation-evidence** (high, score=290.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **infospace-bench** (high, score=290.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **issue-facade** (high, score=290.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **railiance-apps** (high, score=290.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **state-hub** (high, score=290.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **the-custodian** (high, score=290.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **vergabe-teilnahme** (high, score=290.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **artifact-store** (medium, score=78.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **issue-facade** (medium, score=78.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **railiance-apps** (medium, score=78.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
+- **state-hub** (medium, score=78.0): problem: recurring error — Read the file (or the region you'll touch) before Edit/Write
 - **artifact-store** (medium, score=50.55): problem: budget overrun — Read narrowly — target the region you need, not whole large files
 - **vergabe-teilnahme** (medium, score=12.0): problem: recurring error — Investigate recurring error on {
 - **ops-bridge** (medium, score=10.0): problem: recurring error — Investigate recurring error on found <n> errors (<n> fixed, <n> remaining).