diff --git a/skills/backlog-triage/references/classification.md b/skills/backlog-triage/references/classification.md
index 481a7ca..79ecb90 100644
--- a/skills/backlog-triage/references/classification.md
+++ b/skills/backlog-triage/references/classification.md
@@ -26,6 +26,22 @@ duplicate_threshold: 0.75
 - `closed_issue_limit` caps how many recent closed issues are collected for snapshot v2 enrichment.
 - `stale_days` and `duplicate_threshold` are collected as config-as-data for downstream scripts (`triage-stale`, `triage-relate`); `triage-collect` does not apply them yet.
 
+## Snapshot shape
+
+Each snapshot has an explicit schema marker:
+
+```json
+{
+  "schema_version": 2,
+  "generated": "2026-04-18T01:30:00.000Z",
+  "repo": "owner/name",
+  "config_path": "backlog/triage-config.yml",
+  "issues": []
+}
+```
+
+`schema_version: 2` means default issue entries include `closing_prs`, while `comments` and top-level `closed_issues` remain opt-in enrichment fields.
+
 ## Per-issue snapshot shape
 
 Each entry in `snapshot.issues` has:
diff --git a/skills/backlog-triage/references/relationships.md b/skills/backlog-triage/references/relationships.md
index 3477805..0ac36ca 100644
--- a/skills/backlog-triage/references/relationships.md
+++ b/skills/backlog-triage/references/relationships.md
@@ -119,11 +119,13 @@ Evidence payloads vary by kind:
 }
 ```
 
-## Deferred to #73
+## Deferred follow-ups
 
-These signals are intentionally out of scope for `#62` because the current snapshot schema does not include the required fields:
+The snapshot collector now has the raw fields for these signals, but `triage-relate.js` does not emit them yet:
 
 - `comments`-based mention scan
-  - Reason: the snapshot currently carries `issue.body` only, so comment text is unavailable without extending the snapshot in `#73`.
+  - Requires: `--with-comments` snapshot enrichment and a clear edge shape that distinguishes issue-body evidence from comment evidence.
 - `merged-pr-link` edge kind
-  - Reason: PR linkage depends on `closing_prs` metadata that is also deferred to the `#73` snapshot extension.
+  - Requires: interpreting per-issue `closing_prs` without turning every linked PR into a close recommendation.
+
+Tracked in #189.
diff --git a/skills/backlog-triage/references/stale.md b/skills/backlog-triage/references/stale.md
index 4fdea96..5382bc8 100644
--- a/skills/backlog-triage/references/stale.md
+++ b/skills/backlog-triage/references/stale.md
@@ -44,8 +44,10 @@ Each candidate includes a non-empty `evidence` object.
 
 For `invalid`, only `matchedLabel` and `labels` change accordingly.
 
-## Deferred to #73 / follow-up
+## Deferred follow-ups
 
-- `PR already merged`: deferred to #73 because the current snapshot does not include `closing_prs` linkage.
-- `Duplicate of closed`: deferred to #73 because the current snapshot does not include closed-issue state for duplicate targets.
+- `PR already merged`: collector v2 includes `closing_prs`, but stale analysis still needs a conservative rule before suggesting closure.
+- `Duplicate of closed`: `--with-closed-issues` can include bounded closed-issue context, but stale analysis still needs a tested title/body matching rule before suggesting merge-or-close actions.
 - `Referenced code removed`: deferred because the current snapshot has no code-removal evidence and no follow-up implementation is defined yet.
+
+The first two signals are tracked in #190.
diff --git a/skills/backlog-triage/scripts/triage-collect.js b/skills/backlog-triage/scripts/triage-collect.js
index af01003..4d8df01 100755
--- a/skills/backlog-triage/scripts/triage-collect.js
+++ b/skills/backlog-triage/scripts/triage-collect.js
@@ -16,6 +16,7 @@ const GRAPHQL_PAGE_SIZE = 100;
 const DEFAULT_CLOSED_ISSUE_DAYS = 180;
 const DEFAULT_CLOSED_ISSUE_LIMIT = 200;
 const DEFAULT_COMMENT_FETCH_CONCURRENCY = 5;
+const SNAPSHOT_SCHEMA_VERSION = 2;
 const OPEN_ISSUES_QUERY = `
   query($owner: String!, $name: String!, $pageSize: Int!, $endCursor: String) {
     repository(owner: $owner, name: $name) {
@@ -528,6 +529,7 @@ function isProgressIssue(issue) {
 
 function buildSnapshot({ issues, repo, generated, configPath = CONFIG_PATH, config, closedIssues }) {
   const snapshot = {
+    schema_version: SNAPSHOT_SCHEMA_VERSION,
     generated,
     repo,
     config_path: configPath,
diff --git a/skills/backlog-triage/scripts/triage-collect.test.js b/skills/backlog-triage/scripts/triage-collect.test.js
index 8695046..4309d03 100644
--- a/skills/backlog-triage/scripts/triage-collect.test.js
+++ b/skills/backlog-triage/scripts/triage-collect.test.js
@@ -324,6 +324,7 @@ describe("collectSnapshot", () => {
     assert.equal(fs.existsSync(expectedPath), true);
 
     const written = JSON.parse(fs.readFileSync(expectedPath, "utf-8"));
+    assert.equal(written.schema_version, 2);
     assert.equal(written.repo, "sungjunlee/dev-backlog");
     assert.equal(written.config_path, "backlog/triage-config.yml");
     assert.equal(written.issues.length, 1);
@@ -400,6 +401,7 @@ describe("collectSnapshot", () => {
     });
 
     assert.equal(result.snapshot.repo, "sungjunlee/dev-backlog");
+    assert.equal(result.snapshot.schema_version, 2);
     assert.equal(calls[0].command, "git");
     assert.deepEqual(calls[0].args, ["remote", "get-url", "origin"]);
     assert.equal(calls[1].command, "gh");
diff --git a/skills/backlog-triage/scripts/triage-report.js b/skills/backlog-triage/scripts/triage-report.js
index f50154d..6b9bd88 100755
--- a/skills/backlog-triage/scripts/triage-report.js
+++ b/skills/backlog-triage/scripts/triage-report.js
@@ -7,9 +7,9 @@ const { readSnapshot } = require("./triage-stale.js");
 const ANCHOR_PATTERN = /<!--\s*triage:([\w-]+)\s+#(\d+)(?:\s+(.*?))?\s*-->/;
 const DEFAULT_REPORT_DIR = path.join("backlog", "triage");
 const DEFERRED_RELATIONSHIPS_MARKER =
-  "_(PR-merged edges deferred — requires snapshot v2 `closing_prs`; tracked in #73)_";
+  "_(PR/comment relationship signals deferred — collector fields exist; analyzer rules tracked in #189)_";
 const DEFERRED_OBSOLETE_MARKER =
-  "_(closing-PR-already-merged and duplicate-of-closed signals deferred — requires snapshot v2; tracked in #73)_";
+  "_(closing-PR-already-merged and duplicate-of-closed signals deferred — collector fields exist; stale rules tracked in #190)_";
 
 function usage() {
   return "Usage: triage-report.js --snapshot PATH [--relate PATH] [--stale PATH] [--out PATH] [--json]";
diff --git a/skills/backlog-triage/scripts/triage-report.test.js b/skills/backlog-triage/scripts/triage-report.test.js
index c055612..8f2cf29 100644
--- a/skills/backlog-triage/scripts/triage-report.test.js
+++ b/skills/backlog-triage/scripts/triage-report.test.js
@@ -356,7 +356,7 @@ describe("triage-report integration chain", () => {
     assert.match(markdown, /<!-- triage:close #104 reason="inactive\/stale: no activity for 107 days; exceeds stale_days threshold \(60\); no milestone assigned" -->/);
     assert.match(markdown, /<!-- triage:close #105 reason="labeled wontfix; explicit wontfix signal" -->/);
     assert.match(markdown, /<!-- triage:close #106 reason="labeled invalid; explicit invalid signal" -->/);
-    assert.match(markdown, /PR-merged edges deferred/);
+    assert.match(markdown, /PR\/comment relationship signals deferred/);
     assert.match(markdown, /closing-PR-already-merged and duplicate-of-closed signals deferred/);
 
     // Classification groups must match Done Criteria: theme / label / age.