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P01: Persist scoped rail diagnostics through the existing logger #3092
Description
Parent: #3083. Phase P01, design-bearing. Owner: ac-dev-rust-v5. No dependencies.
Outcome
Provide an additive append_rail_diagnostic command shared by Tauri and Web dispatch. Each valid enabled rail diagnostic record goes to the existing backend logger as one bounded line; preserve filters, redaction, append/rotation and existing APIs.
Scope
Modify only src-tauri/src/commands/config.rs, src-tauri/src/web/commands.rs, src-tauri/src/lib.rs and test-only code in src-tauri/src/logging.rs.
Use the approved Option boundary, fixed private errors and shared typed validation/emission seam. No logger/dependency/setting, global logger test mutation, GUI action or version bump.
Acceptance and verification
Prove production validation/emission through a local real gate/formatter to an actual temporary log file. Cover Debug/Trace, Info/invalid negatives, second append, rotation, Tauri/Web parity and bounded private payloads. Run approved Rust checks/integration guards and structural PRE/POST evidence; shipper owns compilation.
No claim of fsync, loss-free shutdown, native click reproduction or original bug repair.
Frozen specification
Shared canonical plan root: D:/0_repos/AgentsCommander_iac/.ac/plans/3083-rail-click-diagnostics/
Master plan-v3-rail-click-diagnostics.md: 3C05355B89CE4D0EBE882EABC9130884189BB3747CBE1EAE99901D3653B479BC
Index v3/epic.md: D81C50B661E439AF8582C4D2666E8390069172BB53E74C04157765ED5D8077ED
Sole cold-start phase specification v3-P01-backend.md:
BADDB49D18EE497D56761D54B637C7FC689E2219620CF98836818BAF52EE8A00
All five exact-version participants approved in round3; execution identity/branch/base are recorded separately by coordinator. This issue does not close the parent.
Activity
Merge pull request #3094 from mblua/chore/3092-rail-diagnostic-ingress
mblua commentedon Oct 18, 2026
Delivered backend phase P01 through PR #3094, merged at
9813d6a59ec67e67905331fd492ec57c63e2024b. This child is CLOSED; parent #3083 remains open for frontend phase #3093.The shared validated Tauri/Web ingress now emits scoped Debug records to the existing logger. Six focused tests passed, including actual-file gate/append/rotation proof; locked all-targets check and all three layering guards passed (1/5/3 tests). Both independent code/positive-proof reviewers PASS. Rust SCC member sets and module arcs unchanged.
All triggered CI succeeded on reviewed head
bdc8a018829c3085061f3530570cc556a426971f, including Windows regression, Linux clippy, format, debt and Sonar. Full-tier jobs were not selected (ci-tierrun3401/full=false); their skips are explained by workflow conditions. Incoming main delta was unrelated profile TypeScript metadata/tests, documented on the PR. Initial local linker failure is preserved; the single permitted continuation passed with repository-confined process-only build/temp outputs, without changing source/global build configuration or establishing the old failure's cause.Local repository is clean on
main == origin/main == 9813d6a59ec67e67905331fd492ec57c63e2024b; merged branch removed locally/remotely. No packaged build requested or produced, no GUI/input test or installation. Frontend logging is not enabled until P02 lands and the app is updated. Evidence remains in room25room-shared/3092-P01/and canonical plan execution receipts.