fix(delegate-task): literal negative-clause kills self-task FP (0.2.0->0.2.1)

«создать задачу себе» false-positive-fired delegate-task instead of
using-tasks (5/5 trials, found by delegate-task-test-trigger). Root cause:
the self-task phrase shares the stem «создать задачу» with the positive
trigger «создать задачу на агента», and the abstract "Does NOT apply when
doing the work yourself" carve-out cannot beat a literal stem-match under
the using-superpowers 1%-rule.

Fix: make the negative literal + routed. Description now lists
«создать задачу себе» / «task for myself» / «поставить себе задачу»
-> using-tasks; body "Ne primenyaetsya" gains a self-assigned bullet plus a
disambiguator («на агента»/«агенту»/«в проект X» = delegate; «себе» = own
board). PATCH bump 0.2.0 -> 0.2.1.

Verification (fresh-context subagents, simulated available-skills registry,
no hint): positives 5/5 -> delegate-task (no regression); negative
«создать задачу себе на завтра» 4/5 -> using-tasks (was 0/5). The 1
residual miss reasoned correctly but tripped on an eval-harness artifact
(prompt forced skill-name-before-reasoning), not description ambiguity.

Wiki: concept page delegate-task-negative-trigger-fp.md + index/log.
Board: [delegate-task-description-fp-fix] -> done.

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

.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)
+- [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