execution-plan-review

execution-plan-review

Present the per-issue ordering and execution assignments as one table, absorb the user's revisions, and keep the GitHub issues — the single source of truth cold agents read — in sync.

Steps

1. Render the table from the issues, not from memory

Fetch every issue in the milestone (gh issue list --milestone ... --json number,title,body) and parse the ## Execution blocks. The table:

Issue	C	Depends on	Runs after	Build model	Effort	Validate effort	fableplan first?	Plan effort

(Validate effort and Plan effort both default to high when an issue's block omits the line — show the effective value. Show Plan effort as — on a fableplan first: No issue only when it stamps no line at all, since no plan stage runs; when such an issue does carry a stamped line, show that tier marked ignored — e.g. xhigh (ignored) — never a bare —. A stale stamp from a hand edit or a pre-convention issue must be visible in the table that is meant to be the source of truth, not masked by it; the milestone pipeline logs it on every run. Display an absent ordering field as missing, not none, so legacy prose inference is not silently discarded.)

Follow with 2–3 sentences on the pattern (which Capability bands dominate, where fableplan bridges Capability 2, what the review trigger is) — enough for the user to sanity-check against the prd-to-issues / validate-issue band table, not a lecture.

2. Take revisions

• The user revises in shorthand ("11 should be medium", "12 depends on 8 and 9", "13 runs after 12", "clear 14's dependencies", "plan 17 at xhigh"). Resolve ambiguous references (row position vs issue number) against the table just shown; when genuinely ambiguous, confirm in half a sentence. A bare effort revision ("11 should be medium") means the build effort — confirm in half a sentence when the issue also has a plan stage.
• Push back once when a revision conflicts with the score band (canonical table in validate-issue step 6 / prd-to-issues) — e.g. fableplan on Capability 0–1, or dropping below Fable/Opus on a money/security/irreversible-deletion issue (high Risk → Capability 2–3). One recommendation with the reason, then the user decides. Money/security/irreversible-deletion issues dropping below the top model deserve an explicit warning.
• Batch multiple revisions; don't round-trip to GitHub per message.
• A Plan effort revision on a fableplan first: No issue is inert — no plan stage runs, so the value is never read. Say so once and either drop the revision or ask whether they meant to turn fableplan on; never write a value that silently does nothing. Conversely, when a revision flips fableplan to Yes, the issue inherits the default high unless they also name a Plan effort.
• When a revision flips fableplan Yes → No on an issue that carries a Plan effort line, strip that line during write-back and say you dropped it. Refusing to write an inert stamp is only half the rule — one left behind is read by nobody, shows as an ignored tier in the next table, and makes the milestone pipeline log it on every run. The same applies to any inert stamp you find already on an issue: offer to strip it once rather than carrying it forward silently.
• Preserve the edge kind exactly: a Depends on revision remains a hard prerequisite, while a Runs after revision remains ordering-only. Never move an issue between the fields merely to simplify the graph.
• Before writing, verify every referenced issue exists, reject self-references, deduplicate each list, and reject a predecessor present in both fields. Recursively fetch referenced issues outside the milestone until the explicit ordering graph closes so every reachable typed edge participates in validation.
• Reject the whole revision batch before write-back if the combined graph contains a cycle; the graph is the union of every Depends on and Runs after edge, including unchanged and externally referenced issues.

3. Write back

Load github-issue-format before editing. For each changed issue: gh issue edit preserving the entire body, updating only the intended Execution block lines; footer verb flips to Updated. Strip \r from gh-fetched bodies before editing (the API returns CRLF). Re-run the graph validation after any concurrent-edit re-fetch and before retrying a write.

4. Confirm

Re-render the final table once after all revisions land. This table is what the milestone workflow will execute — say so.

To audit the whole milestone read-only before it runs — every Execution-block field against its score's band, the closed dependency graph, the execution waves, the projected run size, and a go / no-go verdict — that is milestoneplan. It reads without editing and routes any Execution-block findings back here.

Failure modes

Situation	Do this
An issue lacks an Execution block	Add one by deriving model/effort/fableplan from the [C..] band per prd-to-issues, and derive a plan effort only when that band puts fableplan at Yes — stamping one on a Capability 0/1/3 issue writes the very inert value the rule above forbids. Flag the backfilled block in the table
An issue lacks one or both ordering fields	Backfill from the approved prd-to-issues graph when available; otherwise infer from Approach/Problem, mark the value as inferred in the table, and confirm it before write-back
User revision references a row that doesn't exist	Show the table again, ask which issue they meant
A revision creates a cycle across either edge kind	Reject the batch without editing any issue and show the cycle path
Revision would put a non-Fable build's effort at low or medium	Set high, or switch the build to Fable 5 if that tier was the point — Opus/Sonnet run at high/xhigh only
Revision would put a Fable build's effort at low	Allowed only on Capability 3 with Volume ≤ 7 ([C75]–[C82]) — Fable-only discretionary tier below that band's medium floor, no pushback needed. Outside Cap-3 or at higher Volume, raise to the Volume tertile (or push back once) — same scope milestoneplan / prd-to-issues / validate-issue enforce
Revision would put validate effort at xhigh	Set high and say why — validate effort is only ever medium or high
Revision names a plan model, not just an effort	Only the effort is stampable — the fableplan stage is Fable 5 by definition. Keep Fable 5, apply the effort if one was named, and say so
Revision would put plan effort at low or medium	Allowed — the planner is always Fable, so every tier is legal; no pushback needed
Edits collide with someone else's concurrent issue edits	Re-fetch, re-apply only your delta