fix(pause): auto-finalize skips threads the session never touched (v3.4.13)

.claude/plugins/onebrain/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "onebrain",
-  "version": "3.4.12",
+  "version": "3.4.13",
   "description": "OneBrain — Your AI Thinking Partner",
   "author": {
     "name": "OneBrain Contributors"

.claude/plugins/onebrain/.codex-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "onebrain",
-  "version": "3.4.12",
+  "version": "3.4.13",
   "description": "OneBrain — Your AI Thinking Partner",
   "namespace": "onebrain",
   "skills": "./skills/",

.claude/plugins/onebrain/skills/pause/SKILL.md

@@ -111,11 +111,12 @@ Where `N` = `next_nn` from Step 2 (the total snapshot count for this thread incl
 
 ## Auto-Finalize (Called by AUTO-SUMMARY and /wrapup "n" branch)
 
-When AUTO-SUMMARY or `/wrapup` "n" branch needs to finalize an active thread before writing a daily session log, it calls into this skill's auto-finalize path. Three skip conditions — if ANY is true, skip:
+When AUTO-SUMMARY or `/wrapup` "n" branch needs to finalize an active thread before writing a daily session log, it calls into this skill's auto-finalize path. "Latest pause file" throughout this section means the file with the highest `NN` for the slug, tiebreak date prefix descending (same rule as `/resume` Step 2) — never file mtime, which sync tools rewrite. Four skip conditions — if ANY is true, skip:
 
 1. **No-activity:** Glob `[logs_folder]/checkpoint/*-{current_session_token}-checkpoint-*.md` — if empty, the session produced no work; skip.
 2. **Already-captured-this-session:** Find the latest pause file of `active_slug`. If its frontmatter `session_token` equals current session token AND no checkpoint file mtime > pause file mtime, the current session's work is already captured by an earlier `/pause`; skip.
 3. **No-pause-files-and-untouched:** If no pause file exists yet for `active_slug` AND the newest checkpoint mtime is older than `_active.md` mtime, the slug was set but no thread activity occurred; skip.
+4. **Thread-untouched:** Skip if this session did no work on the thread after the thread's latest pause file was written (if the slug has no pause files: at any point this session). "No work on the thread" requires ALL of the following after that point: the session did not `/resume` this slug, AND none of the session's checkpoint or conversation content relates to the thread's topic. Judge from the session's checkpoint files (`[logs_folder]/checkpoint/*-{current_session_token}-checkpoint-*.md`) — they survive context compaction; never judge from the visible conversation tail alone. Typical trigger: the thread's latest snapshot carries another session's `session_token` and this session worked only on unrelated topics — auto-finalizing would append that unrelated work into the thread's snapshot series and corrupt `/resume`. A session that resumed or continued the thread and ended without an explicit `/pause` does NOT match this condition — capturing that continuation is exactly what auto-finalize exists for.
 
 If not skipped: run Steps 2–5 above, but in Step 4 frontmatter use `trigger: auto-finalize` instead of `manual`, and in Step 3's `## Where I Stopped` prepend "Auto-finalized at session end. " to the human-readable text.
 

.claude/plugins/onebrain/skills/startup/AUTO-SUMMARY.md

@@ -15,10 +15,11 @@ If conditions are met:
   Glob checkpoint files (post-v2.4.0: checkpoints live in flat `[logs_folder]/checkpoint/` regardless of date): `[logs_folder]/checkpoint/YYYY-MM-DD-{session_token}-checkpoint-*.md`. Also yesterday's (handles cross-midnight sessions): compute yesterday's date (accounting for month/year rollover) and glob `[logs_folder]/checkpoint/YYYY-MM-DD_PREV-{session_token}-checkpoint-*.md`. **Read every file in the glob result** and fully incorporate all of their content into the session summary (not just as background context). Any checkpoint file that exists is unmerged by definition — there is no `merged:` filter. Every checkpoint must appear in the summary before it is deleted.
 - Determine NN: count existing `[logs_folder]/session/YYYY/MM/YYYY-MM-DD-session-*.md` files for today; NN = count + 1, zero-padded to 2 digits (01, 02, …). **Verify** `YYYY-MM-DD-session-NN.md` does not already exist before writing; if it does, increment NN until a free slot is found.
 
-- **Auto-finalize active pause thread (if any) — runs before the session log write.** Read `[logs_folder]/pause/_active.md`. If absent or empty, skip this step. If a slug is present, apply the three skip conditions from `skills/pause/SKILL.md` → Auto-Finalize section (canonical source — keep in sync):
+- **Auto-finalize active pause thread (if any) — runs before the session log write.** Read `[logs_folder]/pause/_active.md`. If absent or empty, skip this step. If a slug is present, apply the four skip conditions from `skills/pause/SKILL.md` → Auto-Finalize section (canonical source — keep in sync):
   - No-activity: no checkpoint file exists for current session_token → skip
   - Already-captured-this-session: latest pause file's session_token == current AND no checkpoint mtime > pause file mtime → skip
   - No-pause-files-and-untouched: no pause file for slug AND newest checkpoint mtime < `_active.md` mtime → skip
+  - Thread-untouched: this session did no work on the thread after its latest pause file was written (ALL of: no /resume of this slug after that point AND no thread-related checkpoint/conversation content after it — judge from checkpoint files, which survive compaction) → skip; a session that resumed or continued the thread does NOT match
 
   If not skipped: invoke `/pause` auto-finalize path (Steps 2–5 of `/pause`, with `trigger: auto-finalize` in frontmatter and "Auto-finalized at session end. " prefix in `## Where I Stopped`). This preserves the active pause thread's continuity when a session ends without an explicit `/pause`. Silent — no user-visible output.
 - Write to `[logs_folder]/session/YYYY/MM/YYYY-MM-DD-session-NN.md` using the Session Log Format from `references/session-formats.md`:

.claude/plugins/onebrain/skills/wrapup/SKILL.md

@@ -45,11 +45,12 @@ Run this BEFORE Step 1.
 
 Runs only when `wrapup_mode = "session"` AND `_active.md` exists.
 
-Apply the three skip conditions from `skills/pause/SKILL.md` → Auto-Finalize section:
+Apply the four skip conditions from `skills/pause/SKILL.md` → Auto-Finalize section:
 
 1. **No-activity:** if no checkpoint file exists for current `session_token`, skip Auto-Finalize.
 2. **Already-captured-this-session:** if latest pause file's frontmatter `session_token` matches current AND no checkpoint mtime > pause file mtime, skip.
 3. **No-pause-files-and-untouched:** if no pause file exists for slug AND newest checkpoint mtime < `_active.md` mtime, skip.
+4. **Thread-untouched:** if this session did no work on the thread after the thread's latest pause file was written (ALL of: no `/resume` of this slug after that point AND no thread-related checkpoint/conversation content after it — judge from checkpoint files, which survive compaction), skip — auto-finalizing would append unrelated work into the thread. A session that resumed or continued the thread does NOT match.
 
 If not skipped: invoke `/pause` auto-finalize path (Steps 2–5 of `/pause`, with `trigger: auto-finalize` in frontmatter and "Auto-finalized at session end. " prefix in `## Where I Stopped`).
 
@@ -657,7 +658,7 @@ Where `{P}` is `len(pause_files)`, `{C}` is the checkpoint count from Step 1. Th
 📂 Auto-finalized pause thread `{slug}` (snapshot {NN}). Thread still active — /resume to continue.
 ```
 
-**If `wrapup_mode = "session"` AND Step 0b Auto-Finalize was skipped due to skip-condition (1, 2, or 3):** add a line after `💾 Session Saved`:
+**If `wrapup_mode = "session"` AND Step 0b Auto-Finalize was skipped due to skip-condition (1, 2, 3, or 4):** add a line after `💾 Session Saved`:
 
 ```
 📂 Pause thread `{slug}` still active ({pause_count} snapshots) — /resume to continue.

CHANGELOG.md

@@ -1,6 +1,6 @@
 ---
-latest_version: 3.4.12
-released: 2026-08-28
+latest_version: 3.4.13
+released: 2026-08-29
 ---
 
 # Changelog
@@ -11,6 +11,11 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 > **Versioning:** Plugin version is tracked in `plugin.json`. Bump when ANY harness config changes — skills, agents, hooks, INSTRUCTIONS, Gemini settings, slash commands, etc.
 > For CLI binary changes, see the [`onebrain-ai/onebrain-cli`](https://github.com/onebrain-ai/onebrain-cli/blob/main/CHANGELOG.md) repository.
 
+## v3.4.13 — 2026-08-29 — Auto-finalize skips threads the session never touched
+
+- `/pause` Auto-Finalize gains a fourth skip condition (Thread-untouched): when the ending session did no work on the active thread since the thread's latest snapshot — e.g. the snapshots belong to another session's token and this session worked only on unrelated topics — auto-finalize skips instead of appending that unrelated work into the thread's snapshot series (which would corrupt `/resume`). The judgment is anchored in checkpoint files so it survives context compaction, and a session that resumed or continued the thread and ended without an explicit `/pause` still auto-finalizes as before.
+- The Auto-Finalize section now pins "latest pause file" to the highest-NN sort `/resume` uses (never mtime); the mirrored skip-condition lists in `/wrapup` Step 0b and AUTO-SUMMARY carry the same fourth condition, and `/wrapup`'s skipped-notice wording now covers it.
+
 ## v3.4.12 — 2026-08-28 — Codex hooks survive cache refreshes
 
 - Codex hook manifests call the cache-independent runner in OneBrain CLI v3.4.25+, so an active task no longer retains a dead path when the plugin cache refreshes.