[Castor-o7]

RAL-180, on the watchman's terms of 2026-11-14.

The cause: the digest's RAL-102 section takes each merge's repository from the story's current evidence. dsm-record-merges records every DiscoSim car, often while the story is claimed (in parts, claimed again, or merged before its closing submit). Claimed rows carry no evidence, so the line read "no repository in the evidence", five times a train. The live service (475bd94) also predates RAL-161's part_evidence fallback.

(a) Repository fallback: a merge whose story has no evidence takes its repository from its prefix's project in the projects list. The line says "(its repository from the projects list [declared])".

(b) rally digest --gate <PREFIX>=<logs dir>,<checkout>[,running=<window>] (repeatable): that project's merges are read from the gate's <tip>.log and <tip>.ok files and the checkout's git, never from GitHub. One line per tip names the stories it holds. Every line is [observed] and says what was read. Paths are given as written (~/…).

• green: the earliest tip that holds the merge, has its .ok, has a log naming the tip with no failure, and is on origin/main. Condition 1: a red or running tip beside it can't turn a landed, gated merge red.
• green at T, but T isn't on origin/main: condition 2, said as its own line. Urgent.
• RED at T: no green tip holds the merge, and the newest tip that does failed, or has had no .ok past the running limit. Urgent.
• gate running: within the limit (2h by default, set in the flag). Checked again each pass.
• no gate log: none of the newest 200 logs holds the merge. Urgent.
• can't be told yet: the merge isn't fetched in the checkout. Told once and retried, given up after 2h.

--gate is kept in the pid file's settings, so rally digest --restart --gate … adds it to the running loop. It needs no projects.json change and no service restart, because the digest loop is the CLI.

Tests:

• gate_check, on throwaway repos with fake gate directories:
  • the flag;
  • green on main;
  • a red train rebuilt green plus a stacked train gating on top, which stays green;
  • green but not on main;
  • no log, red, running, then past the limit;
  • not fetched.
• digest: one line per tip, and each verdict's exact words, urgency and what's kept; the repo fallback.
• digest_loop: --gate in the args, and old pid files still read.

Dry run on Murph's real files: 8 recent DSM merges (DSM-211, 218, 226 and 229) read through the library against ~/.local/state/dsm-gates and ~/Documents/GitHub/Discoteque. All 8 came back green at a tip on origin/main, about 0.43 s each.

fmt, clippy -D warnings, and cargo test --locked --no-fail-fast all pass locally. Queued behind #266.

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