blog: Rolling Out Action Authority on New Surfaces (#653)

* blog: add Rolling Out Action Authority on New Surfaces

Operational playbook post that extends the existing shadow-to-
enforcement-cutover-decision-tree per-surface for the action-authority
extensions. Practical counterweight to the five theory posts shipped
this session.

Structure:
- Week 1: Surface inventory (template, sanity check)
- Week 2: Shadow-mode instrumentation per surface (memory / merge /
  click / voice instrumentation table)
- Week 3: Per-surface gate primitives + calibration (per-surface
  primitive tables matching the sibling posts' caps and patterns)
- Week 4: Cutover, lowest cost-of-false-positive-denial first
  (memory → click → voice → merge)
- Rollback decision tree (per-surface thresholds with explicit
  heuristic labeling)
- Monitoring (first 72h / first month / ongoing)
- Runbook template (7 entries per surface)
- What it is not / What it is

The per-surface gate primitives are 15-of-16 verbatim or near-verbatim
matches with the sibling posts' actual caps (per consistency reviewer):
- Memory: per-tenant write quota, TTL on unverified facts, per-write
  provenance, scope isolation
- Merge: distinct-approver, requires_human_approval, per-session
  promotion budget, deploy-gate cap
- Click: requires_fresh_screenshot, cross-tenant navigation deny,
  target-intent risk schedule, session budget denominated in risk
- Voice: predictive reservation, wall-clock cap, tier-aware gating,
  per-turn-boundary re-check

Reviews: internal cycles 1-3 (scorecard 9.4/10), glossary linker
applied 7 contextual links. Cycle 1 caught and fixed:
- Terminology drift "reserve-to-actual ratio" -> "reserve-to-commit
  ratio" (canonical corpus term)
- Tag "rollout" -> "adoption" to match cutover-decision-tree precedent
- Click "wall-clock cap" reworded to match sibling's actual framing
  ("session budget denominated in risk, not count")
- Cutover-order metric clarified as "cost of false-positive denial,"
  not action blast radius
- Rollback R/A row scoped to voice-specific
- 20%/40%/30% concentration thresholds labeled as starting heuristics
- Week 3 calibration window made explicit ("at least a week...
  calibrating four surfaces in parallel typically requires extending
  Week 3 to 2-3 weeks")
- Two rhetorical closers cut; "What Action Authority Adoption Is"
  section tightened from anaphoric essay to operational summary

This post depends on the five sibling PRs being merged first
(#648-#652) so its many cross-links resolve.

* blog: apply codex round-1 review to rolling-out-action-authority-on-new-surfaces

Apply/skip tally: 8 applied, 0 pushed back.

Applied:
- L36 synthesis quote: replaced "the lifecycle is the stable layer"
  (which is not the exact synthesis H2 wording) with prose
  paraphrase that aligns with the actual H2 "Reserve-Commit Is the
  Stable Layer."
- L45 / L140 / L225 "risk order" / "lowest-risk" framing aligned
  with L142 clarification: now "false-positive-cost order" /
  "lowest-false-positive-cost" throughout, matching how the cutover
  order is actually ranked.
- L103 absolute "the quota is wrong / not constraining anything"
  softened to "Substantially higher rates suggest...; substantially
  lower rates suggest...". Calibration target labeled as starting
  heuristic.
- L125 "Most shadow weeks produce a clean bimodal distribution"
  hedged: "When the shadow data produces a clearly bimodal
  distribution, the cap belongs in the gap; when it does not, the
  schedule needs more (target, intent) features."
- L138 generalized "reserve-to-commit ratio across all four
  surfaces" claim scoped: voice has a true reserve-to-commit ratio;
  the other three use cap-fire rate vs shadow baseline as the
  analogue.
- L152 ">85% intended denials" labeled as a minimum triage bar
  with explicit note that sensitive surfaces (merge, voice
  mid-conversation) target higher fractions.
- L187 "Reserve-to-actual ratio per surface" rewritten to
  "Voice reserve-to-commit ratio, trending; for the other three
  surfaces, cap-fire rates vs the shadow-mode baseline." Fixes
  both the terminology drift (capital-R variant the replace_all
  missed) and the cross-surface ratio generalization.

Codex verified all per-surface gate primitives match the sibling
PRs #648-#652 and confirmed the SEO, code-accuracy, and tone
dimensions clean.

* blog: reschedule rolling-out-action-authority-on-new-surfaces to 2026-06-20

Moved from 2026-05-22 to 2026-06-20 to land one week after the synthesis
post in the weekly publishing cadence. Final arc dates:
- memory 5/16
- merge 5/23
- computer-use 5/30
- voice 6/06
- synthesis 6/13
- rollout playbook 6/20

Also adjusted "The last five posts" to "The recent five-post arc" since
the series no longer publishes daily.

Author: amavashev