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Merged
justin808 merged 8 commits into from
Jul 13, 2026
Merged

Restore durable Codex goal prompt headroom #148

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164404d
Restore durable Codex prompt headroom
justin808 Jul 12, 2026
d40be30
Clarify compact goal closeout semantics
justin808 Jul 12, 2026
a3d6a4b
Align compact goal fallback guidance
justin808 Jul 12, 2026
801f903
Align compact review gate semantics
justin808 Jul 12, 2026
7e53a94
Fix prompt sizing list indentation
justin808 Jul 13, 2026
bc55840
Fix Output list nesting
justin808 Jul 13, 2026
da0bf62
Preserve configured reviewer gate in GMCC
justin808 Jul 13, 2026
3656708
Align canonical auto-merge closeout semantics
justin808 Jul 13, 2026
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15 changes: 8 additions & 7 deletions skills/plan-pr-batch/SKILL.md
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Original file line number Diff line number Diff line change
Expand Up @@ -296,7 +296,7 @@ Plan a PR batch
degrade to `UNKNOWN` when the backend does not provide them, while `pr_url`
may use the verified GitHub PR URL from PR-open/current PR state.
- For the `codex` target, keep the fenced goal prompt under 4000 characters
total, including the `/goal` line, so bulky detail stays in the Batch Plan. <!-- host-allow: codex-only -->
total with at least 300 characters of headroom, including the `/goal` line, so bulky detail stays in the Batch Plan. <!-- host-allow: codex-only -->
For the `claude` or `generic` target, do not prepend the Codex-only
`/goal` wrapper; keep the shared `$pr-batch` invocation and do not apply Codex's strict 4000-character limit. <!-- host-allow: codex-only -->
Still keep the prompt compact, measured, under 8000 characters, and free of
Expand All @@ -315,16 +315,17 @@ Plan a PR batch
Require `MODEL_ESCALATION_REQUEST` before a worker moves
to the stronger route. If the host cannot apply a route, stop for
re-planning rather than silently substituting.
When route entries themselves cause the overflow, split along route groups
so each generated goal carries only the included lanes' complete routes;
When route entries themselves cause the overflow or breach the 300-character
headroom floor, split along route groups so each generated goal carries only
the included lanes' complete routes;
preserve omitted lanes and routes in the Batch Plan for later prompts.
- Before responding, measure only the text inside the goal-prompt fence,
including the `/goal` line for Codex and excluding the fence lines, and <!-- host-allow: codex-only -->
print `Goal prompt character count: N characters (target: codex|claude|generic)`
after the fence.
- For Codex, if the measured prompt is 4000 characters or more, shrink by moving detail to the Batch Plan. If it still
will not fit, split it into smaller goals and output only the first ready goal; list omitted ready items in
the Batch Plan for later goal prompts.
- For Codex, if the measured prompt is 4000 characters or more, shrink by moving detail to the Batch Plan. Also split
before overflow when less than 300 characters of headroom remain. Output only
the first ready goal; list omitted ready items in the Batch Plan for later goal prompts.
Comment thread
coderabbitai[bot] marked this conversation as resolved.
- For Claude or generic targets, do not split solely because the prompt is
4000 characters or more. Split only when the prompt is too large for the
target host, too bulky to review safely, or would hide ownership and
Expand Down Expand Up @@ -408,7 +409,7 @@ Coordinator model/effort: <model/class>/<effort>.
Launch assurance: parent <exact model>/<effort>@<source>; checker <exact model>/<effort>@<source>; exact-policy UNKNOWN blocks.
Worker model/effort routes: <initial model/class>/<effort> -> <lane ids>; escalation <model/class>/<effort> after MODEL_ESCALATION_REQUEST; max <N>.
Dispatch <lane_id>: route policy <hard|preferred>; requested <dispatcher>@<route>; fallbacks <dispatcher>@<route>->...|none; auth dispatch/route <y|n>/<y|n>.
Goal Mode Completion Contract: `waiting-on-checks-or-review` is not an overall Goal-mode terminal state; pending, missing, or untriaged current-head CI or configured review agents, unresolved current-head review threads, failures, or UNKNOWN => NOT COMPLETE; poll/fix; after a watch window, report NOT COMPLETE with resume instructions. A batch with 5 PRs, 3 pending hosted checks, and clean review threads is NOT COMPLETE. `ready-no-merge-authority` is terminal only when `merge_authority` does not allow merging. With `auto_merge_when_gates_pass`, done means merged and closed out unless a real blocker prevents it.
GMCC-v1: `waiting-on-checks-or-review`; pending/missing/untriaged current-head CI/reviews/review agents; unresolved current-head review threads; failures/UNKNOWN => NOT COMPLETE; poll/fix then bounded-watch resume handoff; `ready-no-merge-authority` only without merge auth; `auto_merge_when_gates_pass` => merged+closed out when a PR exists; target closed out; issue closed where applicable unless real blocker.
Batch QA Lane: <owner/scope | none+rationale>.
Scope: titles/deps/exclusions/owners.
File-touch map:
Expand Down
160 changes: 126 additions & 34 deletions skills/plan-pr-batch/scripts/check_goal_prompt_size.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -5,13 +5,15 @@

CODEX_GOAL_PROMPT_CHAR_LIMIT = 4_000
CLAUDE_GENERIC_GOAL_PROMPT_CHAR_LIMIT = 8_000
GOAL_PROMPT_MIN_HEADROOM = 100
GOAL_PROMPT_MIN_HEADROOM = 300
REQUIRED_GOAL_PROMPT_MIN_HEADROOM = 300
# Set by bin/validate in this source pack; installed copies must not infer docs ownership from target files.
SOURCE_CHECKOUT_ENV = "AGENT_WORKFLOWS_SOURCE_CHECKOUT"
TEXT_FENCE = "```text\n"
GOAL_LINE = "/goal"
INVOCATION_LINE = "Use $pr-batch to complete this batch with subagents."
BATCH_SIZE_TARGET_PROMPT_PHRASE = "Batch size target: <codex|claude|generic>; wave:"
GOAL_PROMPT_HEADROOM_RULE_PHRASE = "at least 300 characters of headroom"
COORDINATOR_MODEL_EFFORT_PROMPT_LINE = "Coordinator model/effort: <model/class>/<effort>."
LAUNCH_ASSURANCE_PROMPT_LINE = "Launch assurance: parent <exact model>/<effort>@<source>; checker <exact model>/<effort>@<source>; exact-policy UNKNOWN blocks."
WORKER_MODEL_EFFORT_ROUTES_PROMPT_LINE = "Worker model/effort routes: <initial model/class>/<effort> -> <lane ids>; escalation <model/class>/<effort> after MODEL_ESCALATION_REQUEST; max <N>."
Expand All @@ -20,6 +22,35 @@
MODEL_EFFORT_DISPATCH_LINE = "- Bind actors on-host; unbound -> stop; no inheritance/substitution; exact-policy parent mismatch/UNKNOWN -> relaunch; checker mismatch/UNKNOWN -> reserve fresh"
DISPATCHER_PREFLIGHT_PROMPT_LINE = "- Dispatch: pending->persist/reissue token; active->no launch; input->decision; fence->stop/reconcile."
DISPATCH_PLAN_PROMPT_LINE = "Dispatch <lane_id>: route policy <hard|preferred>; requested <dispatcher>@<route>; fallbacks <dispatcher>@<route>->...|none; auth dispatch/route <y|n>/<y|n>."
GOAL_MODE_COMPACT_CONTRACT = "GMCC-v1: `waiting-on-checks-or-review`; pending/missing/untriaged " \
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"current-head CI/reviews/review agents; unresolved current-head review threads; " \
"failures/UNKNOWN => NOT COMPLETE; poll/fix then bounded-watch resume handoff; " \
"`ready-no-merge-authority` only without merge auth; " \
"`auto_merge_when_gates_pass` => merged+closed out when a PR exists; " \
"target closed out; issue closed where applicable unless real blocker."
GOAL_MODE_CANONICAL_EXPANSION = "Goal Mode Completion Contract: `waiting-on-checks-or-review` is not an " \
"overall Goal-mode terminal state; pending, missing, or untriaged current-head " \
"CI or configured review agents, unresolved current-head review threads, failures, " \
"or UNKNOWN => NOT COMPLETE; poll/fix; after a watch window, report NOT COMPLETE " \
"with resume instructions. A batch with 5 PRs, 3 pending hosted checks, and clean " \
"review threads is NOT COMPLETE. `ready-no-merge-authority` is terminal only when " \
"`merge_authority` does not allow merging. With `auto_merge_when_gates_pass`, done " \
"means merged and closed out unless a real blocker prevents it."
GOAL_MODE_REQUIRED_SEMANTICS = [
"`waiting-on-checks-or-review`",
"pending/missing/untriaged current-head CI/reviews/review agents",
"unresolved current-head review threads",
"failures/UNKNOWN => NOT COMPLETE",
"poll/fix then bounded-watch resume handoff",
"`ready-no-merge-authority` only without merge auth",
"`auto_merge_when_gates_pass` => merged+closed out when a PR exists",
"target closed out",
"issue closed where applicable unless real blocker"
].freeze
GOAL_MODE_AUTOLOAD_NORMATIVE_PHRASES = [
"inline semantics remain normative when the workflow reference is",
"missing or cannot autoload"
].freeze
MIXED_DISPATCH_POLICY_LINES = <<~TEXT.chomp
Dispatch implementation: route policy preferred; requested remote@balanced/medium; fallbacks remote@strongest/high; auth dispatch/route y/y.
Dispatch qa-review: route policy hard; requested remote@strongest/high; fallbacks none; auth dispatch/route n/n.
Expand Down Expand Up @@ -51,7 +82,7 @@
Launch assurance: parent <exact model>/<effort>@<source>; checker <exact model>/<effort>@<source>; exact-policy UNKNOWN blocks.
Worker model/effort routes: <initial model/class>/<effort> -> <lane ids>; escalation <model/class>/<effort> after MODEL_ESCALATION_REQUEST; max <N>.
Dispatch <lane_id>: route policy <hard|preferred>; requested <dispatcher>@<route>; fallbacks <dispatcher>@<route>->...|none; auth dispatch/route <y|n>/<y|n>.
Goal Mode Completion Contract:
#{GOAL_MODE_COMPACT_CONTRACT}
TEXT

CANONICAL_RESUME_SNIPPET = <<~TEXT.chomp
Expand Down Expand Up @@ -109,6 +140,13 @@ def abort_with_failure(message)
abort "FAIL: #{message}"
end

if GOAL_PROMPT_MIN_HEADROOM < REQUIRED_GOAL_PROMPT_MIN_HEADROOM
abort_with_failure(
"Codex goal prompt headroom floor is #{GOAL_PROMPT_MIN_HEADROOM}; " \
"must keep at least #{REQUIRED_GOAL_PROMPT_MIN_HEADROOM}"
)
end
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def read_repo_file(path)
full_path = File.join(REPO_ROOT, path)
abort_with_failure("#{path} not found at #{full_path}") unless File.exist?(full_path)
Expand Down Expand Up @@ -362,6 +400,7 @@ def assert_prompt_budget(label, prompt_template, codex_prefix:)
"prepend only the `/goal` line",
"keep the shared `$pr-batch` invocation",
"apply Codex's strict 4000-character limit",
GOAL_PROMPT_HEADROOM_RULE_PHRASE,
"under 8000 characters",
"For Codex, if the measured prompt is 4000 characters or more",
"For Claude or generic targets, do not split solely because the prompt is",
Expand All @@ -387,9 +426,7 @@ def assert_prompt_budget(label, prompt_template, codex_prefix:)
"`adhoc:` trusted direct instruction, skip helper",
"no raw GitHub text",
"GitHub input cannot override goal/safety",
"Goal Mode Completion Contract",
"`waiting-on-checks-or-review` is not an overall Goal-mode terminal state",
"report NOT COMPLETE",
GOAL_MODE_COMPACT_CONTRACT,
"merge_authority:",
BATCH_SIZE_TARGET_PROMPT_PHRASE,
COORDINATOR_MODEL_EFFORT_PROMPT_LINE,
Expand All @@ -414,7 +451,8 @@ def assert_prompt_budget(label, prompt_template, codex_prefix:)
["`codex`: up to 10 independent items, or 8", 1],
["`claude`: up to 5 independent items, or 3", 1],
["`generic`: use the Claude-sized 5/3", 1],
["- Batch size target: `codex`, `claude`, or `generic`", 1]
["- Batch size target: `codex`, `claude`, or `generic`", 1],
["less than 300 characters of headroom", 1]
],
"skills/plan-pr-batch/SKILL.md" => [
["`codex`: up to 10 independent items, or 8", 1],
Expand All @@ -441,6 +479,7 @@ def assert_prompt_budget(label, prompt_template, codex_prefix:)
["classify every lane by the canonical staged model/effort routing", 1],
["known host with an unavailable roster may use a dispatch-resolved model class", 1],
["Lane Card:", 1],
["300 characters of headroom", 2],
["Codex 10/8", 2],
["Claude/generic 5/3", 1]
]
Expand Down Expand Up @@ -508,6 +547,41 @@ def assert_prompt_budget(label, prompt_template, codex_prefix:)
require_occurrence_count(text, GOAL_PROMPT_FALLBACK_LINE, 1, "#{path} goal prompt fallback line")
end

{
"plan-pr-batch goal prompt" => prompt_template,
"pr-batch goal prompt" => pr_batch_prompt_template,
"workflow plan-to-goal prompt" => workflow_prompt_template
}.each do |label, template|
require_occurrence_count(template, GOAL_MODE_COMPACT_CONTRACT, 1, "#{label} compact completion contract")
end
require_occurrence_count(
triage_skill_text,
GOAL_MODE_COMPACT_CONTRACT,
1,
"triage generated-prompt compact completion contract"
)
require_phrases(
GOAL_MODE_COMPACT_CONTRACT,
GOAL_MODE_REQUIRED_SEMANTICS,
"self-contained compact Goal-mode completion contract"
)
require_occurrence_count(
workflow_text,
GOAL_MODE_CANONICAL_EXPANSION,
1,
"canonical workflow Goal-mode completion expansion"
)
require_phrases(
workflow_text,
GOAL_MODE_AUTOLOAD_NORMATIVE_PHRASES,
"canonical workflow compact completion fallback"
)
require_phrases(
triage_skill_text,
GOAL_MODE_AUTOLOAD_NORMATIVE_PHRASES,
"triage compact completion fallback"
)

unless workflow_text.include?(CANONICAL_RESUME_SNIPPET)
abort_with_failure("canonical workflow is missing the exact restart resume snippet")
end
Expand Down Expand Up @@ -648,7 +722,13 @@ def assert_prompt_budget(label, prompt_template, codex_prefix:)
generic: result.fetch(:generic_prompt)
}

realistic_checks[label] = { oversized: {}, fallback: {}, mixed_route_fallback: {}, unsplit_four_route: {} }
realistic_checks[label] = {
oversized: {},
fallback: {},
mixed_route_fallback: {},
unsplit_four_route: {},
split_route_groups: {}
}

prompts_by_target.each do |target, target_prompt_template|
limit = target == :codex ? CODEX_GOAL_PROMPT_CHAR_LIMIT : CLAUDE_GENERIC_GOAL_PROMPT_CHAR_LIMIT
Expand Down Expand Up @@ -737,35 +817,40 @@ def assert_prompt_budget(label, prompt_template, codex_prefix:)

next unless target == :codex

if mixed_route_fallback_chars >= limit
{
"implementation" => [first_ready_item, SPLIT_ROUTE_GROUP_LINE, SPLIT_DISPATCH_POLICY_LINE],
"qa-review" => [second_ready_item, SECOND_SPLIT_ROUTE_GROUP_LINE, SECOND_SPLIT_DISPATCH_POLICY_LINE]
}.each do |route_group, (item, route_line, dispatch_line)|
split_route_group_prompt = with_items(target_prompt_template, item).sub(
WORKER_MODEL_EFFORT_ROUTES_PROMPT_LINE,
route_line
).sub(DISPATCH_PLAN_PROMPT_LINE, dispatch_line)
split_route_group_chars = split_route_group_prompt.length
split_route_group_headroom = limit - split_route_group_chars
next if split_route_group_chars < limit && split_route_group_headroom >= GOAL_PROMPT_MIN_HEADROOM

abort_with_failure(
"#{target_label} #{route_group} split route group is #{split_route_group_chars} chars with " \
"#{split_route_group_headroom} chars of headroom; must stay under #{limit} with at least " \
"#{GOAL_PROMPT_MIN_HEADROOM}"
)
end
next
end

mixed_route_headroom = limit - mixed_route_fallback_chars
next if mixed_route_headroom >= GOAL_PROMPT_MIN_HEADROOM
unless mixed_route_fallback_chars < limit && mixed_route_headroom < GOAL_PROMPT_MIN_HEADROOM
abort_with_failure(
"#{target_label} mixed-route preemptive-split fixture must stay under #{limit} while " \
"breaching the #{GOAL_PROMPT_MIN_HEADROOM}-character headroom floor; got " \
"#{mixed_route_fallback_chars} chars and #{mixed_route_headroom} chars of headroom"
)
end
realistic_checks[label].fetch(:split_route_groups)[target] = {}
{
"implementation" => [first_ready_item, SPLIT_ROUTE_GROUP_LINE, SPLIT_DISPATCH_POLICY_LINE],
"qa-review" => [second_ready_item, SECOND_SPLIT_ROUTE_GROUP_LINE, SECOND_SPLIT_DISPATCH_POLICY_LINE]
}.each do |route_group, (item, route_line, dispatch_line)|
split_route_group_prompt = with_items(target_prompt_template, item).sub(
WORKER_MODEL_EFFORT_ROUTES_PROMPT_LINE,
route_line
).sub(DISPATCH_PLAN_PROMPT_LINE, dispatch_line)
split_route_group_chars = split_route_group_prompt.length
split_route_group_headroom = limit - split_route_group_chars
realistic_checks[label].fetch(:split_route_groups).fetch(target)[route_group] = {
chars: split_route_group_chars,
headroom: split_route_group_headroom
}
next if split_route_group_chars < limit && split_route_group_headroom >= GOAL_PROMPT_MIN_HEADROOM

abort_with_failure(
"#{target_label} mixed-route fallback prompt has #{mixed_route_headroom} chars of headroom, " \
"must keep at least #{GOAL_PROMPT_MIN_HEADROOM}"
)
abort_with_failure(
"#{target_label} #{route_group} split route group is #{split_route_group_chars} chars with " \
"#{split_route_group_headroom} chars of headroom; must stay under #{limit} with at least " \
"#{GOAL_PROMPT_MIN_HEADROOM}"
)
end
unless realistic_checks[label].fetch(:split_route_groups).fetch(target).length == 2
abort_with_failure("#{target_label} preemptive split must validate both route groups")
end
end
end

Expand Down Expand Up @@ -795,6 +880,13 @@ def assert_prompt_budget(label, prompt_template, codex_prefix:)
puts "#{label}_#{target}_mixed_route_fallback_goal_prompt_chars=#{result.fetch(:mixed_route_fallback).fetch(target)}"
puts "#{label}_#{target}_unsplit_four_route_candidate_chars=#{result.fetch(:unsplit_four_route).fetch(target)}"
end
result.fetch(:split_route_groups).each do |target, route_groups|
route_groups.each do |route_group, measurements|
metric_group = route_group.tr("-", "_")
puts "#{label}_#{target}_#{metric_group}_split_route_group_chars=#{measurements.fetch(:chars)}"
puts "#{label}_#{target}_#{metric_group}_split_route_group_headroom=#{measurements.fetch(:headroom)}"
end
end
end
puts "codex_oversized_candidate_chars=#{codex_oversized_candidate_chars}"
puts "claude_oversized_candidate_chars=#{claude_oversized_candidate_chars}"
Expand Down
4 changes: 3 additions & 1 deletion skills/pr-batch/SKILL.md
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Original file line number Diff line number Diff line change
Expand Up @@ -287,6 +287,8 @@ Keep this template aligned with the matching plan-to-goal prompt in the
resolved `pr-processing.md`, including the review/audit gate
paragraphs. The `Coordination:` line below intentionally points at the canonical
workflow rules instead of duplicating them.
The compact `GMCC-v1` line is different: its version key pins drift, while its
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inline semantics remain executable when the workflow reference cannot autoload.

Use this template when creating Codex goal text:

Expand All @@ -306,7 +308,7 @@ Coordinator model/effort: <model/class>/<effort>.
Launch assurance: parent <exact model>/<effort>@<source>; checker <exact model>/<effort>@<source>; exact-policy UNKNOWN blocks.
Worker model/effort routes: <initial model/class>/<effort> -> <lane ids>; escalation <model/class>/<effort> after MODEL_ESCALATION_REQUEST; max <N>.
Dispatch <lane_id>: route policy <hard|preferred>; requested <dispatcher>@<route>; fallbacks <dispatcher>@<route>->...|none; auth dispatch/route <y|n>/<y|n>.
Goal Mode Completion Contract: `waiting-on-checks-or-review` is not an overall Goal-mode terminal state; pending, missing, or untriaged current-head CI or configured review agents, unresolved current-head review threads, failures, or UNKNOWN => NOT COMPLETE; poll/fix; after a watch window, report NOT COMPLETE with resume instructions. A batch with 5 PRs, 3 pending hosted checks, and clean review threads is NOT COMPLETE. `ready-no-merge-authority` is terminal only when `merge_authority` does not allow merging. With `auto_merge_when_gates_pass`, done means merged and closed out unless a real blocker prevents it.
GMCC-v1: `waiting-on-checks-or-review`; pending/missing/untriaged current-head CI/reviews/review agents; unresolved current-head review threads; failures/UNKNOWN => NOT COMPLETE; poll/fix then bounded-watch resume handoff; `ready-no-merge-authority` only without merge auth; `auto_merge_when_gates_pass` => merged+closed out when a PR exists; target closed out; issue closed where applicable unless real blocker.
Batch QA Lane: <owner/scope | none+rationale>.
Scope: titles/deps/exclusions/owners.
File-touch map:
Expand Down
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