Clarify CalibForge static-check findings and missing coverage

Describe the instruction suffix as appended, report 275 kept tasks with remaining absolute-path warnings, and disclose that file-reference passes skipped comparisons because no reference solutions exist.

calibforge_v1/README.md

@@ -24,7 +24,9 @@ Intended benchmark transfer: Terminal-Bench 2.0 and OpenThoughts-TBLite 2.0; dat
 - **Build and setup: 5,317 kept tasks passed.** **5,027 kept tasks repaired** for Docker-to-Apptainer working directories, variables, COPY, temporary files, heredocs, multi-stage builds and missing inputs. Verifier preparation repaired in **2,941 kept tasks**, including **2,813** with setup separated from grading. **57 archived:** 45 server/ownership, 7 temporary-state, 2 privileged-port and 3 repeated login-connection failures.
 - **No-op baseline (reward 0): 5,317 kept tasks passed.** **13 verifier repairs**, including missing-output assertions and dependency/service errors. **57 archived:** 4 false successes, 10 missing Python, 8 memory failures, 11 library failures, 8 native crashes, 7 timeouts, 4 missing pytest, 2 shell-script errors, 1 missing starting file and 2 permission failures.
 - **Reference solution (reward 1):** skipped; no reference solutions.
-- **Rule-based checks:** timeout/anti-cheating instructions restored on **5,317 tasks**; container-backed `task-absolute-path` review resolved **50 paths in 37 tasks**, clearing 35 warnings. `task-toml-schema` repaired **2** redundant resource declarations. `dockerfile-sanity`: **1 apt-tool pin repair**, freshly passed build and no-op validation. **0 additional archives**; unresolved pip pins and remaining path warnings are advisory.
+- **Rule-based checks:** timeout/anti-cheating sentence appended to **5,317 tasks**. Container-backed `task-absolute-path` review resolved **50 paths in 37 tasks**, clearing all path warnings for 35 tasks; **275 kept tasks still have absolute-path warnings**. These remain advisory and have not all been established as false positives. `task-toml-schema` repaired **2** redundant resource declarations. `dockerfile-sanity`: **1 apt-tool pin repair**, freshly passed build and no-op validation. **0 additional archives**; unresolved pip pins remain advisory.
+
+The `test-file-references` check recorded **5,317 passes**, but skipped the path comparison for every task because `solution/solve.sh` is absent. All 5,317 tasks have Python verifier tests. The checker only compares paths shared by verifier tests and a reference solution against the instructions; **verifier-only path coverage has not been checked by this rule**.
 
 Repair counts overlap. Results combine historical full runs with targeted checks of restored repairs.