1 files changed, 33 insertions, 6 deletions
diff --git a/docs/superpowers/plans/2026-10-20-corrections-and-signature-library.md b/docs/superpowers/plans/2026-10-20-corrections-and-signature-library.md
index fb4ad2c..b93497f 100644
--- a/docs/superpowers/plans/2026-10-20-corrections-and-signature-library.md
+++ b/docs/superpowers/plans/2026-10-20-corrections-and-signature-library.md
@@ -282,7 +282,7 @@ thing.
 and had no tests; its output was an answer, not code to keep. Everything needed to rebuild it
 properly is above.
 
-### 4. Store and age signatures — NOT STARTED
+### 4. Store and age signatures — DONE 2026-10-24
 
 Two kinds, which behave nothing alike:
 
@@ -295,14 +295,40 @@ Confidence is a count of sightings across **separate fetch occasions**, which is
 independence test the withheld intro/outro offsets have been waiting for. Never promote on one
 sighting.
 
-### 5. Shadow run — NOT STARTED
+### 5. Shadow run — DONE 2026-10-24, now gathering
 
 Match against each batch, log what it *would* have cut, publish nothing. A week or two answers
 whether it finds advertising or accumulates junk, before one extra second is skipped.
 
-### 6. Publish matches, and unlock intro/outro — NOT STARTED
+**Running now.** Every detection pass learns from what it found and reports what the library
+would add, marking as *novel* only the proposals detection did not already publish. Those are
+logged individually with their votes, occasions and partner counts.
 
-Only once the shadow run has earned it.
+**It matches before it harvests.** Harvesting first would let a batch's own signatures match the
+batch they came from, and every run would report itself a triumph.
+
+**One decision the tests forced, worth knowing.** Requiring two separate occasions before a
+signature is matched against would mean the library could only ever propose advertising that
+detection had already found twice -- precisely when it has nothing to add. So a *copy* that
+arrives with partners is trusted at once: a break is only published because the audio recurred
+across episodes and correlation proved it, which is not a single unsupported sighting. A *cue*
+gets no such shortcut, which is the independence test intro and outro have been waiting for.
+
+**What to look for in the log.** `shadow -- learned N, reinforced N, library N (N worth
+matching); would cut N, N of them new`. The novel count is the number that matters. If it stays
+at zero for weeks the library is adding nothing; if it climbs with proposals that do not sound
+like advertising, the thresholds are wrong and nothing has been skipped in the meantime.
+
+### 6. Publish matches, and unlock intro/outro — DELIBERATELY NOT STARTED
+
+Only once the shadow run has earned it, and it has had one pass. Everything it needs is now
+built; what is missing is evidence, and evidence takes weeks of real batches. Building this now
+would throw away the only reason the shadow run exists.
+
+**What would make it ready:** novel proposals that hold up when listened to, and cue signatures
+reaching two or more separate fetch occasions. The second is what unlocks the withheld intro and
+outro offsets -- an opening theme confirmed across *weeks* is the show's, where one confirmed
+across a single batch of eight was an advertisement.
 
 ---
 
@@ -366,5 +392,6 @@ everything measured, though not directly caught in a probe.
   refresh rather than at launch.
 - **Library and Settings redesign (step 4 of the UI plan) not started.** Smallest wins; nothing
   depends on it. Mockups in https://claude.ai/artifact/AnywWE7j7e96QUpXvF9yaW
-- **Intro/outro offsets still withheld.** They need sightings spanning more than one fetch
-  occasion — which step 4 of the library delivers.
+- **Intro/outro offsets still withheld.** The machinery to unlock them exists now: a cue is
+  trusted only after two separate fetch occasions, which is exactly the independence they need.
+  What is missing is weeks of real sightings. Nothing to build; something to wait for.