fix(memory): verdict lines carry the brief and a distinguishing mission id

The first self_audit run on a planted brief/condition mismatch found the
pattern and quoted it, then diagnosed "the agent skipped the section": the
record held the condition but not the brief, and working agents never see the
condition. It also read two missions as one — a UUIDv7's first 8 chars are a
timestamp, and missions 34 s apart both rendered as 01a0cb38.

- verdict_line records the phase brief (config.task) beside the condition
- the short mission id is the uuid tail
- self_audit copies the record into the checkout (the judge cannot read
  /mission/memory) and compares brief with condition

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

crates/cm-api/src/mission_memory.rs

@@ -49,6 +49,7 @@ fn brain_path(dir: &Path, repo_id: Uuid) -> PathBuf {
 pub fn verdict_line(
     mission_id: Uuid,
     phase_kind: &str,
+    brief: &str,
     condition: &str,
     verdict: &crate::evaluator::Verdict,
 ) -> Option<String> {
@@ -65,10 +66,26 @@ pub fn verdict_line(
     if finding.is_empty() {
         return None;
     }
+    // The TAIL. A UUIDv7 leads with its timestamp, so two missions launched
+    // seconds apart share their first eight characters — measured: two planted
+    // missions 34 s apart both rendered as `01a0cb38`, and the self-audit read
+    // them as one mission failing twice.
     let short = mission_id.simple().to_string();
+    let short = &short[short.len() - 8..];
+    // The brief is what the agent was TOLD; the condition is what it was
+    // judged against, and working agents are not shown it. Without the brief a
+    // reader of the record cannot tell "the agent skipped a requirement" from
+    // "nobody asked for it" — the first self-audit on a planted brief/condition
+    // mismatch diagnosed the former and proposed a fix that would not have
+    // helped.
+    let brief = brief.trim();
+    let told = if brief.is_empty() {
+        String::new()
+    } else {
+        format!(" — brief: {}", head(&brief.split_whitespace().collect::<Vec<_>>().join(" "), 200))
+    };
     Some(format!(
-        "{outcome} — {phase_kind} phase of mission {} — condition: {} — judge: {}",
-        &short[..8],
+        "{outcome} — {phase_kind} phase of mission {short}{told} — condition: {} — judge: {}",
         head(condition, 200),
         head(finding, 400),
     ))
@@ -81,6 +98,7 @@ pub fn remember_verdict(
     repo_id: Uuid,
     mission_id: Uuid,
     phase_kind: &str,
+    brief: &str,
     condition: &str,
     verdict: &crate::evaluator::Verdict,
 ) {
@@ -89,6 +107,7 @@ pub fn remember_verdict(
         repo_id,
         mission_id,
         phase_kind,
+        brief,
         condition,
         verdict,
     )
@@ -99,10 +118,11 @@ fn remember_in(
     repo_id: Uuid,
     mission_id: Uuid,
     phase_kind: &str,
+    brief: &str,
     condition: &str,
     verdict: &crate::evaluator::Verdict,
 ) {
-    let Some(line) = verdict_line(mission_id, phase_kind, condition, verdict) else {
+    let Some(line) = verdict_line(mission_id, phase_kind, brief, condition, verdict) else {
         return;
     };
     let path = brain_path(dir, repo_id);
@@ -329,7 +349,7 @@ mod tests {
     #[test]
     fn unmet_remembers_guidance_not_reason() {
         let v = verdict(false, "token ZZQX-9 is absent", "the required marker is absent", None);
-        let line = verdict_line(Uuid::nil(), "coding", "cond", &v).unwrap();
+        let line = verdict_line(Uuid::nil(), "coding", "", "cond", &v).unwrap();
         assert!(line.starts_with("UNMET — coding phase"));
         assert!(line.contains("the required marker is absent"));
         assert!(!line.contains("ZZQX-9"));
@@ -338,16 +358,36 @@ mod tests {
     #[test]
     fn met_remembers_what_the_judge_found() {
         let v = verdict(true, "MICROVM.md holds both lines", "", None);
-        let line = verdict_line(Uuid::nil(), "coding", "cond", &v).unwrap();
+        let line = verdict_line(Uuid::nil(), "coding", "", "cond", &v).unwrap();
         assert!(line.starts_with("MET — "));
         assert!(line.contains("MICROVM.md holds both lines"));
     }
 
+    /// What the agent was told sits beside what it was judged against, and two
+    /// missions launched back to back stay two missions. Both were missing when
+    /// the first self-audit read a planted brief/condition mismatch as "the
+    /// agent skipped the section" and two missions as one.
+    #[test]
+    fn a_line_carries_the_brief_and_a_distinguishing_mission_id() {
+        let v = verdict(false, "r", "add a Limitations section", None);
+        let a = Uuid::now_v7();
+        let b = Uuid::now_v7();
+        let brief = "Write NOTES.md:\n  five bullet points";
+        let la = verdict_line(a, "research", brief, "ends with Limitations", &v).unwrap();
+        let lb = verdict_line(b, "research", brief, "ends with Limitations", &v).unwrap();
+        assert!(la.contains(" — brief: Write NOTES.md: five bullet points — condition: "), "{la}");
+        assert_ne!(la, lb, "same-second UUIDv7s must not render as one mission");
+        let tail = a.simple().to_string();
+        assert!(la.contains(&format!("mission {}", &tail[tail.len() - 8..])), "{la}");
+        let none = verdict_line(a, "research", "  ", "c", &v).unwrap();
+        assert!(!none.contains("brief:"), "an empty brief adds no segment: {none}");
+    }
+
     /// No judgement, no lesson.
     #[test]
     fn an_unreachable_judge_leaves_no_memory() {
         let v = verdict(false, "could not evaluate", "could not evaluate", Some("429"));
-        assert!(verdict_line(Uuid::nil(), "coding", "cond", &v).is_none());
+        assert!(verdict_line(Uuid::nil(), "coding", "", "cond", &v).is_none());
     }
 
     #[test]
@@ -366,10 +406,10 @@ mod tests {
         let repo = Uuid::now_v7();
         assert!(export_in(&dir, repo).is_none(), "no brain, no export");
 
-        remember_in(&dir, repo, Uuid::now_v7(), "coding", "first",
+        remember_in(&dir, repo, Uuid::now_v7(), "coding", "", "first",
             &verdict(false, "r", "the tests do not cover the empty case", None));
         std::thread::sleep(std::time::Duration::from_millis(5));
-        remember_in(&dir, repo, Uuid::now_v7(), "coding", "second",
+        remember_in(&dir, repo, Uuid::now_v7(), "coding", "", "second",
             &verdict(true, "all three tests pass", "", None));
 
         let md = export_in(&dir, repo).expect("two verdicts, so an export");
@@ -398,7 +438,7 @@ mod tests {
             "",
             None,
         );
-        remember_in(&dir, repo, Uuid::now_v7(), "benchmark", "a baseline is recorded", &v);
+        remember_in(&dir, repo, Uuid::now_v7(), "benchmark", "", "a baseline is recorded", &v);
         let got = recall_in(&dir, repo, "record a performance baseline for the hot path", RECALL_K);
         assert_eq!(got.len(), 1, "{got:?}");
         assert!(got[0].starts_with("MET — benchmark phase"), "{}", got[0]);