[pranaygp]

Docs follow-ups for two changes that landed on main without docs updates.

• [core] Skip redundant hook disposals at run termination #4990: hooks disposed as a workflow returns or throws (for example, a top-level using) no longer record a hook_disposed event, because the terminal event releases them. Explicitly disposing a retained hook still records one. Added to the hook lifecycle section of Event sourcing.
• [security] Keep the Vercel OIDC token on the origin it was sent to #4994: the Vercel World no longer follows HTTP redirects on workflow API requests, so a 3xx fails the request. Noted under WORKFLOW_VERCEL_BACKEND_URL on the Vercel World and Worlds configuration pages.

The other recent PRs (#4922, #4940, #4945) already included their docs changes.

Preview

• Event sourcing > Hook lifecycle
• Vercel World > WORKFLOW_VERCEL_BACKEND_URL
• Configuration > Worlds > WORKFLOW_VERCEL_BACKEND_URL

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Project	Deployment	Actions	Updated
example-nextjs-workflow-turbopack	Ready	Preview, v0	Oct 22, 2026 4:07pm UTC
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example-workflow	Ready	Preview, v0	Oct 22, 2026 4:07pm UTC
workbench-astro-workflow	Ready	Preview, v0	Oct 22, 2026 4:07pm UTC
workbench-express-workflow	Ready	Preview, v0	Oct 22, 2026 4:07pm UTC
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[github-actions]

Sim World

Simulated world deterministic testing for races. Traces

🟢 world-sim scenario book — 0 fail of 42 total

fence=per-spec

scenario	outcome	events	virt	replay	violations
✅ smoke-no-steps	completed	3	0ms	ok	0
✅ smoke-one-step	completed	6	0ms	ok	0
✅ hook-at-step-started	completed	11	0ms	ok	0
✅ hook-at-step-completed	completed	11	0ms	ok	0
✅ hook-at-hook-created	completed	11	0ms	ok	0
✅ deadline-hook-wins	completed	6	1.0h	ok	0
✅ deadline-expires	completed	6	1.0h	ok	0
✅ step-vs-timer-early-settlement	completed	8	1.0h	ok	0
✅ long-sleep	completed	11	30.0d	ok	0
✅ hook-never-arrives	stalled	3	0ms	skipped	0
✅ step-retries-twice	completed	10	2.0s	ok	0
✅ parallel-steps	completed	9	0ms	ok	0
✅ hook-on-execution-state	completed	11	0ms	ok	0
✅ peek-hook-before-branch	completed	11	0ms	ok	0
✅ peek-hook-after-branch	completed	11	0ms	ok	0
✅ peek-hook-at-registration	completed	11	0ms	ok	0
✅ race-hook-before-probe	completed	11	0ms	ok	0
✅ race-hook-after-probe	completed	11	0ms	ok	0
✅ race-duplicate-delivery	completed	12	0ms	ok	0
✅ attr-hook-before-step	completed	10	0ms	ok	0
✅ attr-hook-after-step	completed	10	0ms	ok	0
✅ attr-from-step-body	completed	12	0ms	ok	0
✅ fork-hook-after-timeout	completed	13	1.0m	ok	0
✅ fork-hook-before-timeout	completed	13	1.0m	ok	0
✅ count-hook-after-timeout	completed	16	1.0m	ok	0
✅ count-hook-before-timeout	completed	19	1.0m	ok	0
✅ stale-read-step-count-fork	completed	19	1.0m	ok	0
✅ stale-read-equal-step-counts	completed	13	1.0m	ok	0
✅ step-vs-step-fork	completed	12	0ms	ok	0
✅ step-vs-step-fork-fenced	completed	12	0ms	ok	0
✅ fence-catches-benign-direction	completed	12	5ms	ok	0
✅ in-flight-before-decision	completed	16	1.0m	ok	0
✅ in-flight-before-decision-counted	completed	16	1.0m	ok	0
✅ in-flight-after-decision	completed	18	2.0m	ok	0
✅ stale-read-step-count-fork-fenced	completed	19	1.0m	ok	0
✅ fork-hook-wins	completed	12	1.0m	ok	0
✅ fork-timeout-wins	completed	12	1.0m	ok	0
✅ unclaimed-payload-under-fork	completed	16	1.0m	ok	0
✅ claimed-payload-under-fork	completed	16	1.0m	ok	0
✅ writers-independent-step-bodies	completed	12	0ms	ok	0
✅ writers-scripted-tempo	completed	11	0ms	ok	0
✅ cancel-mid-step	cancelled	7	0ms	skipped	0

Full trace: world-sim.txt

[github-actions]

No backport to stable for 4f8e5ba (AI decision).

This commit documents two behavior changes (#4990's terminal hook release and #4994's no-redirect Vercel World requests) that landed only on main, so the text would describe behavior that doesn't exist on the 4.x maintenance line. I also verified the three edited files are absent on origin/stable (git ls-tree origin/stable returns nothing for them; docs/content/worlds/ doesn't exist there and docs/content/docs/v5/ only carries an api-reference subset), so the change has nothing to apply to.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

4f8e5baea252be628fb2715133ea6db049a1af62