docs(skills): dynamic-workflow v2 — background-first delegation, campaign lessons from #102117

Main moved under take-1: top-level delegate_task is background-forced (results
re-enter as messages; synthesizing on the same turn reads files that do not
exist yet), per-task `toolsets` is gone (children inherit the parent's set),
DELEGATE_BLOCKED_TOOLS is {delegate_task, clarify, memory, send_message,
cronjob_manage} (execute_code is NOT stripped), and the 457-char description
was truncated by the 60-char routing budget. All four bbopen review items fixed.

Adds the campaign shape learned running the 1,863-session / 19-hour
whole-codebase simplification fan-out (#102117): shared brief + exclusive
file ownership, commit-per-step as the only handoff, fleet ceiling before the
OAuth refresh stampede, per-round integration with a frozen base and a full
suite on the combined tree, `rev-list --count` per branch before declaring a
round done (168 late-slice commits were once left behind), one serialized
test runner, forward-port last, live QA as its own wave, refuting the parent's
own heuristics with the same attempt/refuter mechanic, HANDOFF.md on restart.

Frontmatter now meets the hardline standard (platforms, ≤60-char description,
modern section order); `/tmp` replaced by the terminal temp dir so the skill is
correct on Termux and Windows. Catalog + sidebar + generated page added.

website/sidebars.ts

@@ -173,6 +173,7 @@ const sidebars: SidebarsConfig = {
                     'user-guide/skills/bundled/autonomous-ai-agents/autonomous-ai-agents-claude-code',
                     'user-guide/skills/bundled/autonomous-ai-agents/autonomous-ai-agents-codex',
                     'user-guide/skills/bundled/autonomous-ai-agents/autonomous-ai-agents-computer-use',
+                    'user-guide/skills/bundled/autonomous-ai-agents/autonomous-ai-agents-dynamic-workflow',
                     'user-guide/skills/bundled/autonomous-ai-agents/autonomous-ai-agents-hermes-agent',
                     'user-guide/skills/bundled/autonomous-ai-agents/autonomous-ai-agents-merge-reconciler',
                     'user-guide/skills/bundled/autonomous-ai-agents/autonomous-ai-agents-opencode',