feat(using-tasks): session_break marker [v1.2.0]

Add a session_break marker so a task author can mark a task's
completion as a natural session boundary. After the task closes 🟢,
before tasks_claim_next, an autonomous agent prints the verbatim
SESSION BOUNDARY line and stops instead of chaining the next task.
Absent -> behaviour unchanged.

- STATUS.md format: optional **Session break:** field + new
  "### session_break marker" subsection (type bool|string, examples).
- Task completion step 6: after close, before claim-next, check the
  closed task's session_break; print boundary line + stop if present.
- Rules bullet "Honour session_break".
- Wiki concept page concepts/using-tasks-session-break.md + index + log.

MINOR bump: new optional capability, no existing behaviour changed.
Closes [session-break-using-tasks].

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.tasks/STATUS.md

@@ -1,5 +1,5 @@
 # Task Board
-_Updated: 2026-06-09 — delegate-task-review done (VERDICT PASS; smoke-test 6/6 fresh subagents, no blocking findings, 3 informational notes). Ранее: delegate-task-test-trigger done (pos 5/5, neg 2/3; FP на «создать задачу себе» → follow-up delegate-task-description-fp-fix, shipped v0.2.1). Ранее (2026-06-08): откат churn'а от агент-раннера (always-on dry-run): 5 тасок (using-yt-tools-rate-limit-guard, archive-roundtrip-test, skills-grouping-revisit, hermes-converter-ci, tdd-criteria-precommit-hook) спуриозно claimed/blocked из-за workspace-divergence бага раннера → возвращены в ⚪ ready. yt-tools re-scoped на plugin-репо `OpeItcLoc03/yt-tools` (исходный stub deprecated)._
+_Updated: 2026-06-09 — session-break-using-tasks done (using-tasks 1.1.0→1.2.0; `session_break` marker — stop after close before claim-next). Ранее: delegate-task-review done (VERDICT PASS; smoke-test 6/6 fresh subagents, no blocking findings, 3 informational notes). Ранее: delegate-task-test-trigger done (pos 5/5, neg 2/3; FP на «создать задачу себе» → follow-up delegate-task-description-fp-fix, shipped v0.2.1). Ранее (2026-06-08): откат churn'а от агент-раннера (always-on dry-run): 5 тасок (using-yt-tools-rate-limit-guard, archive-roundtrip-test, skills-grouping-revisit, hermes-converter-ci, tdd-criteria-precommit-hook) спуриозно claimed/blocked из-за workspace-divergence бага раннера → возвращены в ⚪ ready. yt-tools re-scoped на plugin-репо `OpeItcLoc03/yt-tools` (исходный stub deprecated)._
 
 <!--
   Canonical layout. One block per task. Per-task deep context lives in
@@ -566,7 +566,7 @@ Findings → follow-up tasks через tasks_create в claude-skills.
 
 ---
 
-## 🔴 [session-break-using-tasks] — ## Goal
+## 🟢 [session-break-using-tasks] — ## Goal
 **Owner:** DESKTOP-NSEF0UK:claude-opus:18704
 **Claim token:** e7a28f0e-ef35-4dc2-9c15-8cc5d8122527
 **Claim expires at:** 2026-06-09T13:44:05.344Z
@@ -600,11 +600,12 @@ Add `session_break` field support to `using-tasks` skill v1.1.0 → v1.2.0.
 needs-claude
 
 **Weight:** needs-claude
-**Status:** ready
+**Status:** done
-**Where I stopped:** (not started)
+**Where I stopped:** Shipped — `skills/using-tasks/SKILL.md` 1.1.0→1.2.0 (MINOR). Added `session_break` marker: (1) optional `**Session break:**` field in the STATUS.md format block + new "### `session_break` marker" subsection documenting type (bool | string) with examples (`true` → "см. STATUS.md", `"<hint>"` → named next track) and where it lives (task frontmatter / board mirror); (2) Task completion **step 6** — after close 🟢 + commit, before `tasks_claim_next`, read the closed task's `session_break`; if present, print the verbatim SESSION BOUNDARY line and STOP, else behaviour unchanged; (3) Rules bullet "Honour `session_break`". Verbatim message fixed dead-on per design. Wiki: `concepts/using-tasks-session-break.md` + index + log. All 4 acceptance criteria met (docs/policy artifact — no test surface; coverage by diff inspection).
-**Next action:** Прочитать skills/using-tasks/SKILL.md, добавить правило session_break в раздел Task completion, поднять версию до v1.2.0
+**Next action:** (none — kept until merged; paired review task `session-break-using-tasks-review` unblocked)
 **Branch:** n/a
 <!-- created-by: OpeItcLoc03@DESKTOP-NSEF0UK / from: OpeItcLoc03/workshop / 2026-06-09T10:15:26.019Z -->
+<!-- closed-by: DESKTOP-NSEF0UK:claude-opus:18704 / 2026-06-09 / 1.1.0→1.2.0 MINOR; session_break marker (format docs + Task-completion step 6 + Rules bullet + verbatim SESSION BOUNDARY line); wiki concept page; 4/4 acceptance met by inspection (markdown policy, no test surface) -->
 
 ---
 

.wiki/concepts/using-tasks-session-break.md

@@ -0,0 +1,52 @@
+---
+title: using-tasks session_break marker
+type: concept
+tags: [using-tasks, autonomous-runner, session-boundary]
+updated: 2026-06-09
+---
+
+# using-tasks `session_break` marker
+
+`using-tasks` v1.2.0 adds a `session_break` marker so a task author can mark a task's
+completion as a natural place to **stop**, rather than have an autonomous agent immediately
+chain into the next task via `tasks_claim_next`.
+
+## Problem
+
+An autonomous runner closes a task and, by default, claims the next one. There is no signal
+for "this is a good seam to end the session" — so unrelated tracks get welded into one
+ever-growing context, and the natural review/hand-off moment is skipped.
+
+## Design
+
+- **Marker:** `session_break` in the task's frontmatter (task-system delivery) or the
+  `**Session break:**` field in the task's STATUS.md block (local board mirror).
+- **Type:** boolean or string.
+  - `true` → pause after close; next track is "see STATUS.md".
+  - `"<hint>"` → pause after close; the hint names the recommended next track.
+- **Enforcement point:** `using-tasks` → Task completion, **step 6** — *after* the task is
+  🟢 and committed, *before* any `tasks_claim_next` / starting the next task.
+- **Behaviour when present:** print the SESSION BOUNDARY line verbatim, then stop (do not
+  claim the next task).
+- **Behaviour when absent:** unchanged — claim / start the next task as usual.
+
+### Verbatim message
+
+```
+🔚 SESSION BOUNDARY — [slug] закрыта. Рекомендую завершить текущую сессию. Следующий трек: [value | "см. STATUS.md"]
+```
+
+`[slug]` = the closed task's slug. `[value | "см. STATUS.md"]` = the marker's string value,
+or the literal `см. STATUS.md` when the marker is just `true`. The wording is fixed so the
+boundary is greppable and recognisable across sessions.
+
+## Why a marker, not a heuristic
+
+The decision of *what counts as a stopping point* belongs to whoever scoped the work (the
+delegating workshop), not to the runner mid-flight. A heuristic ("stop after N tasks", "stop
+when tired") would either over- or under-fire. An explicit, opt-in marker keeps the default
+unchanged and makes the boundary a deliberate authoring choice.
+
+## Versioning
+
+MINOR bump (1.1.0 → 1.2.0): new optional capability, no existing behaviour changed.

.wiki/index.md

@@ -41,6 +41,7 @@ Catalog of all wiki pages. One line per page, organized by type. Updated on ever
 - [project-bootstrap-meta-isolation.md](concepts/project-bootstrap-meta-isolation.md) — project-bootstrap@1.11.0 — Step 1 ships meta-isolation block in `.gitignore` (`!.claude/`, `!.tasks/`, `!.wiki/`, ...) so own greenfield/upgrade projects re-enable agent meta-paths against global `core.excludesFile` cutter. Marker-based append-only on existing files; smoke-tested with negative control
 - [interns-grep-audit-design](concepts/interns-grep-audit-design.md) — interns-grep-audit-design
 - [session-handoff-skill-design.md](concepts/session-handoff-skill-design.md) — design rationale for the `session-handoff` skill (sliding overwrite into `.tasks/NEXT_SESSION.md`, phrase whitelist + substantive-commit heuristic, optional PostToolUse hook for harness-side determinism, orient+ask default, project scope, cluster 7/7 closure)
+- [using-tasks-session-break.md](concepts/using-tasks-session-break.md) — `using-tasks` v1.2.0 `session_break` marker: task-author-set boolean/string flag; after a task closes 🟢, before `tasks_claim_next`, an autonomous agent prints the verbatim SESSION BOUNDARY line and stops instead of chaining the next task. Absent → unchanged
 - [delegate-task-negative-trigger-fp.md](concepts/delegate-task-negative-trigger-fp.md) — `delegate-task` v0.2.1 FP fix: «создать задачу себе» stem-matched the «создать задачу на агента» positive trigger; abstract "does NOT apply when doing the work yourself" carve-out loses to literal stem-match under the 1%-rule → made the negative literal + routed (→ using-tasks). Verified pos 5/5, neg 4/5 (was 0/5)
 
 ## Packages

.wiki/log.md

@@ -67,3 +67,4 @@ Parseable: `grep "^## \[" .wiki/log.md | tail -20`.
 ## [2026-05-25] decision | install-cross-platform extended to build scripts — `build.{ps1,sh}` get the symmetric `--prune` / `-Prune` flag (removes `dist/<name>.skill` where `<name>` is not in `skills/`). Bash delegation to `powershell.exe -File build.ps1` does NOT forward the flag — bash runs prune itself against the shared `dist/`. Both paths smoke-tested with fake stale .skill files against real dist/. Closes `[install-ps1-build-prune-followup]`.
 
 ## [2026-06-09] decision | delegate-task-negative-trigger-fp — `delegate-task` 0.2.0→0.2.1 (PATCH): fixed 5/5-consistent false-positive on «создать задачу себе». Root cause: self-task phrase shares stem «создать задачу» with the «создать задачу на агента» positive trigger; the abstract "Does NOT apply when doing the work yourself" carve-out can't beat a literal stem-match under the 1%-rule. Fix: made the negative literal + routed («создать задачу себе» / «task for myself» / «поставить себе задачу» → using-tasks) in description + body disambiguator («на агента»/«агенту» = delegate; «себе» = own board). Re-verified via fresh-context subagent trigger run: positives 5/5 (no regression), negative 4/5 → using-tasks (was 0/5); the 1 residual miss was an eval-harness artifact (forced skill-name-before-reasoning), not description ambiguity. Concept page written; reusable principle = put the exact colliding negative phrase with an explicit →sibling route, literal beats abstract.
+## [2026-06-09] decision | using-tasks-session-break — `using-tasks` 1.1.0→1.2.0 (MINOR): added the `session_break` marker. Task author sets `session_break: true | "<hint>"` in task frontmatter (mirrored as `**Session break:**` on the local board); after the task closes 🟢, before `tasks_claim_next`, an autonomous agent prints the verbatim line `🔚 SESSION BOUNDARY — [slug] закрыта. Рекомендую завершить текущую сессию. Следующий трек: [value | "см. STATUS.md"]` and stops instead of chaining the next task. Absent → behaviour unchanged. Enforced in Task completion step 6 + Rules bullet + format docs. Marker not heuristic: the stop-point is an authoring choice, not a runner guess.

skills/using-tasks/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: using-tasks
-version: 1.1.0
+version: 1.2.0
 description: >
   Policy skill for working with an existing `.tasks/` board (per-task files + STATUS.md).
   Use whenever the user is switching between tasks, resuming a paused task, starting a new
@@ -52,6 +52,7 @@ _Updated: YYYY-MM-DD_
 **Where I stopped:** one sentence — the exact thought or action interrupted
 **Next action:** one concrete step to resume immediately
 **Blocker:** (only if blocked) what is preventing progress
+**Session break:** (optional) `true` — or a hint string for the next track. Marks this task as a session boundary.
 **Branch:** git branch name
 
 ---
@@ -64,6 +65,18 @@ _Updated: YYYY-MM-DD_
 - 🟢 Done — completed, kept until merged
 - 🔵 Blocked — waiting on external input
 
+### `session_break` marker
+
+A task may carry a `session_break` marker — set by whoever defines the task (e.g. the delegating workshop) when its completion is a natural place to stop and start a fresh session. It signals an autonomous agent: *finish this task, then pause instead of immediately claiming the next one.*
+
+- **Type:** boolean or string.
+  - `session_break: true` — pause after close; the next track is "see STATUS.md".
+  - `session_break: "<hint>"` — pause after close; `<hint>` names the recommended next track.
+- **Where it lives:** in the task's frontmatter when delivered via the task system (`session_break: true` / `session_break: "<hint>"`); mirrored on the local board as the optional `**Session break:**` field in the task's STATUS.md block.
+- **Absent →** behaviour is unchanged: close the task and continue as usual.
+
+The check is enforced in the **Task completion** flow below (after close, before claiming the next task).
+
 ---
 
 ## Per-task file format (`<task-slug>.md`)
@@ -133,6 +146,13 @@ Temporary hypotheses, links, names of people to consult.
 3. Set status to 🟢 in STATUS.md.
 4. Append final summary line to Decisions log.
 5. Remind user to delete the branch after merge.
+6. **Session-break check (after close, before claiming the next task).** Once the task is 🟢 and committed — and **before** any `tasks_claim_next` or starting the next task — read the closed task's `session_break` marker (its frontmatter `session_break`, or the `**Session break:**` field in its STATUS.md block). If present:
+   - Print this line **verbatim**, substituting the closed task's slug for `[slug]` and the marker's string value for `[value | "см. STATUS.md"]` (use the literal `см. STATUS.md` when the marker is just `true`):
+
+     `🔚 SESSION BOUNDARY — [slug] закрыта. Рекомендую завершить текущую сессию. Следующий трек: [value | "см. STATUS.md"]`
+
+   - **Stop.** Do not claim or start the next task.
+   - If the marker is absent → behaviour is unchanged: proceed to claim / start the next task as usual.
 
 ### Post-commit task closure prompt
 
@@ -171,4 +191,5 @@ Pair: `using-projects-meta` declares local-first for **reads**; this rule extend
 - **Always confirm orientation at session start** — state understanding before acting.
 - **One active task at a time** — only one 🔴 in STATUS.md.
 - **Never close a task without a coverage check** — see "### Task completion" step 1. Acceptance criteria with no evidence → ask, don't auto-close.
+- **Honour `session_break`** — a closed task carrying a `session_break` marker means stop after close; never chain into `tasks_claim_next`. See "### Task completion" step 6.
 - **Local-first recommendations** — cwd-project board comes first; cross-project urgents are at most one footnote line.