feat(pipeline): consolidate cycle recon, add fieldtest probe tier, enforce assumption economy

Implements the three efficiency findings from the #310 pipeline
measurement (refs #35): ~691k subagent tokens / ~3.5 h for a
deliberately small cycle, with recon duplication as the single
biggest obligatory per-cycle cost.

1. Cycle recon (pipeline.md § Cycle recon; specify, planner,
   brainstorm, boss, plan-recon): recon fan-out is budgeted per
   cycle, not per phase. One full plan-recon dispatch — normally
   specify Step 1, in a new pre-spec sources/recon_scope carrier
   form — serves both the spec's concrete code shapes and the
   plan's file-map. planner Step 2 becomes reuse-first (freshness /
   quotability / coverage conditions) with narrowly-bounded delta
   dispatches (new Delta dispatch contract in plan-recon.md);
   broad Explore-type grounding sweeps are banned in every mode.
   Field evidence: 151k (Explore) + 99k (plan-recon) with ~40 %
   overlap in one bounded cycle.

2. Fieldtest probe tier (fieldtest, fieldtester, pipeline.md,
   agent-template.md § model rule 2): a cycle whose user-visible
   delta is a single narrow axis dispatches the per-cycle
   fieldtest at tier: probe — 1-2 examples on exactly that axis,
   ~200-word report, explicit model:sonnet dispatch override (no
   dispatch-level effort override exists; frontmatter effort
   applies). Probe is a tier, not a skip; the milestone fieldtest
   always runs full tier on the frontmatter model, keeping the
   milestone-close gate's >=2-example floor unconditional.

3. Assumption economy (specify Step 3 + self-review item 6):
   grounding-check cost scales with the spec's assumption count,
   so specs state current-behaviour claims only where the change
   relies on them (the gate's own falsity test), demote
   context-only mentions to ledger citations, and keep iteration
   scope tight — fewer restatements, never fewer reliances. The
   gate itself is unchanged.

Design reviewed pre-implementation (opus plan review); diff
adversarially verified by a 3-lens review workflow (consistency,
operability, cross-reference), confirmed findings folded in.

refs #35

boss/SKILL.md

@@ -177,6 +177,13 @@ new feature work with no spec or plan yet, run the **Entry-path
 reflection** below before dispatching anything. Read each skill's
 `SKILL.md` trigger section if unsure.
 
+**Pre-dispatch grounding stays light.** Queue triage reads issue
+bodies and `git log`; it does not fan out. A code-territory read an
+item needs belongs to the dispatched phase skill's own recon step —
+the cycle recon (`../docs/pipeline.md` § Cycle recon) — and is
+never a broad Explore-type sweep fired before, or instead of, that
+step.
+
 **Entry-path reflection (feature work).** Entry paths form an **ordered
 cascade**, and the choice is made by reflection every time, not by
 habit. The discriminator is no longer a single "design line": it adds a

brainstorm/SKILL.md

@@ -152,8 +152,9 @@ unconditional default.
 ### Step 3 — Populate the space with the synthetic-user swarm
 
 Dispatch the read-only `agents/synthetic-user.md` agent **in parallel, one per
-stance, in a single turn** — the same ad-hoc fan-out brainstorm already uses
+stance, in a single turn** — the same ad-hoc fan-out `specify` uses
-for `plan-recon` and `specify` uses for `spec-skeptic`. No Workflow wrapper: a
+for `spec-skeptic`. (brainstorm's ad-hoc `plan-recon` is a SINGLE dispatch,
+never a fan-out — `../docs/pipeline.md` § Cycle recon.) No Workflow wrapper: a
 one-shot stateless fan-out has no re-loop, no ordering, and no in-code verdict
 to enforce, so it is a direct dispatch, not an `implement-loop`-style script.
 
@@ -343,8 +344,10 @@ reflection for how this folds `brainstorm` into the autonomous cascade.
 - **Autonomous behaviour:** `../boss/SKILL.md` § Direction freedom (trigger 4)
   and the Entry-path reflection — how the autonomous swarm-brainstorm decides
   convergent forks and bounces only divergent ones.
-- **Ad-hoc dispatch.** The orchestrator MAY also ad-hoc dispatch
+- **Ad-hoc dispatch.** The orchestrator MAY ad-hoc dispatch
   `../planner/agents/plan-recon.md` during Step 1 when the cycle enters code
-  territory not recently read; ad-hoc, not part of the standard process.
+  territory not recently read. Subject to the coverage condition in
+  `../docs/pipeline.md` § Cycle recon, that dispatch then IS the cycle's one
+  full recon; `specify` and `planner` reuse its report.
 - **Project feature-acceptance criterion:** declared in the project's
   `CLAUDE.md` — applied prospectively by `specify` (its Step 2), not here.

docs/agent-template.md

@@ -136,7 +136,16 @@ Assignment rule, in priority order:
    gating a cycle (adversarial lenses, plan recon, field/bench
    evidence, the in-loop quality review) — run `opus`. Opus is
    the documented strength for code review, debugging, and deep
-   reasoning.
+   reasoning. One conditioned exception (issue #35): the
+   per-cycle fieldtest's **probe tier** — the cycle's
+   user-visible delta is a single narrow axis — is dispatched by
+   the `fieldtest` skill with an explicit `model: sonnet`
+   dispatch override; the one-axis scope bounds the judgement
+   surface and the orchestrator triages every finding anyway.
+   The frontmatter keeps the opus default, which the milestone
+   fieldtest always runs. (The direct agent-dispatch surface has
+   no per-dispatch *effort* override, so the frontmatter effort
+   applies unchanged on a probe.)
 3. **Mechanical scope** — tightly-scoped execution of a pre-made
    plan, recon, extraction, compliance-diffing run `sonnet`
    (near-opus coding quality at lower latency and cost).

docs/pipeline.md

@@ -92,7 +92,10 @@ hold:
    `bug` findings; `friction` / `spec_gap` findings resolved or
    ratified into the design ledger. A `clean` roll-up is honoured
    only with positive evidence the test actually ran — at least
-   2 examples in the working tree (`examples_added`). A `clean`
+   2 examples in the working tree (`examples_added`). A milestone
+   fieldtest always runs **full tier** (the probe tier is
+   per-cycle only — `../fieldtest/SKILL.md` § Two tiers: probe
+   and full), so this floor is unconditional. A `clean`
    with fewer, over a milestone that touched user-visible surface,
    is itself a `spec_gap`, not a clean close (the agent owes the
    same floor — `fieldtest/agents/fieldtester.md` "What you DO NOT
@@ -151,6 +154,74 @@ judgement call like the `fieldtest` / `docwriter` dispatches,
 not an arm of the selector cascade; the trigger is observed
 accumulation of settled single-issue items.
 
+## Cycle recon
+
+Recon fan-out is budgeted **per cycle, not per phase**. The field
+evidence behind the budget (issue #35, one bounded cycle): a broad
+Explore-type sweep grounding `specify` (151k tokens) plus the
+`plan-recon` dispatch grounding `planner` (99k tokens) overlapped
+~40 % — two full recon passes over the same territory, the single
+biggest obligatory per-cycle cost. This section is the single
+source of the budget, reuse, and delta rules; the skills point
+here and add only their own dispatch mechanics.
+
+- **At most ONE full recon dispatch while a valid cycle recon
+  exists** — the **cycle recon**. It is a `plan-recon` dispatch
+  (`../planner/agents/plan-recon.md`) in the pre-spec carrier
+  form, normally fired at `specify` Step 1 when the work enters
+  code territory the orchestrator has not recently read; an
+  ad-hoc dispatch `brainstorm` fired earlier in the same cycle is
+  the cycle recon instead (subject to the coverage condition
+  below). One report serves every downstream consumer: the spec's
+  concrete code shapes and the plan's file-map. Normally that is
+  one full dispatch per cycle; a further full dispatch is
+  legitimate only via the fallback below.
+- **Broad exploration sweeps are not recon.** No Explore-type
+  fan-out for spec, plan, or pre-dispatch grounding — grounding
+  fan-out goes through the one cycle-recon dispatch. This binds
+  the orchestrator in every mode, `/boss` included.
+- **Reuse over re-dispatch.** A downstream phase reuses the
+  cycle-recon report while ALL of these hold:
+  - *Freshness* — no commit since the dispatch has touched the
+    paths the report maps (`git log <since-recon> -- <mapped
+    paths>` is empty; commits elsewhere — fixtures, tracker
+    side-effects — do not invalidate it). In a multi-iteration
+    cycle, iteration 1's commits to mapped paths invalidate the
+    report for iteration 2's planning.
+  - *Quotability* — the orchestrator can still quote the report's
+    Modify entries verbatim. A summarized memory of the report is
+    not the report. (The designed reuse window is the standard
+    same-session `specify` → `planner` handoff; across a session
+    break the fallback below applies.)
+  - *Coverage* (brainstorm-fired recons only) — the ratified
+    design's territory appears in the report's file-map or
+    existence-table rows, not merely as a one-line out-of-scope
+    acknowledgement. Missing territory is a delta below; a design
+    that pivoted wholly outside the mapped territory voids the
+    dispatch as cycle recon, and `specify` fires the cycle recon
+    afresh.
+- **Delta dispatches do not count against the budget.** A delta
+  is a narrow re-dispatch whose `focus_hint` names the gap; its
+  bounded contract is **Delta dispatch** in
+  `../planner/agents/plan-recon.md`. Triggers:
+  - the spec names a path or symbol that appears in neither the
+    cycle recon's file-map nor its existence table;
+  - MANDATORY: the iteration scope is a signature / variant /
+    removal or content-pin-perturbing scope and the cycle recon
+    carries no compile-driven site set for it — `planner` MUST
+    delta-dispatch before planning that scope. (`specify` avoids
+    this delta by naming the anticipated change shape in
+    `recon_scope`, arming the compile-driven enumeration inside
+    the cycle recon itself.)
+
+  Two deltas in one planner run is the smell that the iteration
+  scope is too broad — re-read the spec.
+- **A full re-dispatch is the bounded fallback, not a failure**:
+  no cycle recon exists (a direct tidy dispatch that skipped
+  `specify`; a session break), or a reuse condition failed. The
+  cost regression is capped at the pre-consolidation status quo —
+  one full dispatch.
+
 ## Phase descriptions
 
 ### brainstorm
@@ -184,7 +255,9 @@ the `grounding-check` gate, and takes sign-off — with review but no
 interview. Under the bold stance it decides every load-bearing fork it
 can *derive* an answer for and records the decision in the run's
 reference issue; it bounces to `brainstorm` only when a fork hangs on a
-pure user preference no source settles. A core node — the spec-production
+pure user preference no source settles. Its code grounding comes from
+the single cycle-recon dispatch (§ Cycle recon), never a broad
+exploration sweep. A core node — the spec-production
 gate before `planner` on every design path.
 
 Outside `/boss` the sign-off is the user's. Under `/boss` the autonomous
@@ -210,8 +283,10 @@ Hard-gate before implement. Produces a placeholder-free,
 bite-sized implementation plan in `docs/plans` (an ephemeral,
 git-ignored working file, shell-`rm`'d alongside the spec at cycle
 close — see `conventions.md` § Lifecycle) that the implement skill can
-execute task-by-task. Dispatches
+execute task-by-task. Its file-map normally comes from reusing the
-the plan-recon agent for read-only file-structure mapping.
+cycle-recon report (§ Cycle recon); it dispatches `plan-recon` only
+for that section's delta triggers, or in full when no valid cycle
+recon exists.
 
 ### implement
 
@@ -282,7 +357,9 @@ practices inside `implement`.
 
 Optional. Orchestrator-dispatched after the audit closes clean
 on a cycle that touched user-visible surface. Picks 2-4 real-
-world tasks within the cycle's scope, implements them using
+world tasks within the cycle's scope (probe tier, for a
+single-axis surface delta: 1-2 tasks on that axis — see
+`../fieldtest/SKILL.md` § Two tiers: probe and full), implements them using
 only the design ledger and public examples (never the language's
 own implementation), runs the results, and writes a friction-
 and-bug spec.

fieldtest/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: fieldtest
-description: Orchestrator-dispatched only, after audit closes clean (or with ratified drift only), when the orchestrator judges the iteration is complete and wants a field test. Picks 2-4 real-world tasks within the cycle's scope, implements each as a downstream consumer of the project, runs them, and writes a friction-and-bug spec. The spec feeds the next plan as a reference. Implementer simulates a downstream user who has only the public interface — never the project's implementation source.
+description: Orchestrator-dispatched only, after audit closes clean (or with ratified drift only), when the orchestrator judges the iteration is complete and wants a field test. Picks 2-4 real-world tasks within the cycle's scope (probe tier, for a single-axis surface delta: 1-2 tasks on that axis), implements each as a downstream consumer of the project, runs them, and writes a friction-and-bug spec. The spec feeds the next plan as a reference. Implementer simulates a downstream user who has only the public interface — never the project's implementation source.
 ---
 
 # fieldtest — usability field test for a shipped cycle
@@ -24,8 +24,8 @@ next to cycle-design specs under `docs/specs`, with a
 `fieldtest-` prefix in the slug.
 
 The substantive process — read the design ledger + cycle spec
-+ recent iter/audit commit bodies, pick 2-4 real-world tasks
++ recent iter/audit commit bodies, pick the dispatched tier's
-per cycle axis, implement each as a downstream consumer, run
+examples, implement each as a downstream consumer, run
 the result, classify findings, write the spec — lives in
 `agents/fieldtester.md`. That file also carries the spec
 template, the source-isolation discipline (no reading under
@@ -61,6 +61,44 @@ here. The milestone fieldtest is skippable on the same terms as
 the per-cycle one, lifted to milestone level: a milestone whose
 entire scope is internal (no user-visible surface) is exempt.
 
+## Two tiers: probe and full
+
+Orthogonal to scope, the **per-cycle** fieldtest runs at one of
+two tiers. The orchestrator picks the tier at dispatch and
+carries it in the carrier's `tier` field — the field, its
+example bounds, and its report cap are defined authoritatively
+under **Carrier contract** in `agents/fieldtester.md` and
+deliberately not restated here:
+
+- **Full** (the default; `tier` absent): one example per axis
+  the cycle touched — the shape the rest of this file describes.
+- **Probe**: for a cycle whose user-visible delta is a **single
+  narrow axis** — one flag, one diagnostic, one configuration
+  key. The carrier's `axis_hints` then names exactly that one
+  axis. Field evidence (issue #35): a full fieldtest cost ~89k
+  tokens on a one-flag cycle even at minimal example count, yet
+  that same dispatch found a real self-description bug — the
+  probe tier keeps that signal at a fraction of the cost.
+
+**Probe is a tier, not a skip.** The skip rules below are
+unchanged: a surface-touching cycle still runs its fieldtest;
+probe merely right-sizes the dispatch when the surface delta is
+one axis. A multi-axis cycle takes the full tier — when in
+doubt, full.
+
+**Probe dispatch mechanics.** A probe dispatch passes an
+explicit `model: sonnet` override on the agent dispatch — the
+dispatch-level model override takes precedence over the agent's
+opus frontmatter; the conditioned exception is documented in
+`../docs/agent-template.md` § model, rule 2. (The direct
+agent-dispatch surface has no per-dispatch effort override, so
+the frontmatter effort applies unchanged; the probe's economy
+comes from the model tier and the one-axis scope.) The
+judgement surface a probe covers is one axis, and the
+orchestrator triages every finding anyway. The **milestone
+fieldtest always runs full tier on the frontmatter model** — its
+carrier takes no `tier` field.
+
 ## When to Use / Skipping
 
 Triggers:
@@ -116,11 +154,12 @@ carrier.
 ## Dispatch
 
 Dispatch `fieldtester` with the carrier from the Handoff
-Contract below. The agent picks 2-4 examples (one per axis
+Contract below. The agent picks its examples per the dispatched
-the cycle touched; fewer loses the signal on variation, more
+tier (bounds in the `tier` carrier row; on full, one per axis
-overflows one readable report), implements them as downstream
+the cycle touched — fewer loses the signal on variation, more
-consumers, runs them, classifies findings, and writes the
+overflows one readable report), implements them as
-spec. The two artefact kinds part ways at commit: the **fixtures are
+downstream consumers, runs them, classifies findings, and
+writes the spec. The two artefact kinds part ways at commit: the **fixtures are
 committed as normal code** (they are consumer test assets — suggested
 subject `fieldtest: <cycle> — <N> examples, <K> findings`), while the
 **fieldtest spec is a git-ignored working file that is never committed**.
@@ -137,10 +176,10 @@ tree as the next cycle's input; it plays no part in the delete decision
 ## Handoff Contract
 
 `fieldtest` consumes (from orchestrator at cycle close) the carrier
-fields `cycle_id`, `cycle_scope`, `axis_hints`, and `commit_range`,
+fields `cycle_id`, `cycle_scope`, `axis_hints`, `commit_range`, and
-defined authoritatively under **Carrier contract** in
+`tier`, defined authoritatively under **Carrier contract** in
 `agents/fieldtester.md` (which also specifies the empty-`axis_hints`
-fallback).
+fallback and the absent-`tier` default).
 
 `fieldtest` produces, for the orchestrator, the fields `spec_path`,
 `examples_added`, and `findings`, defined authoritatively under

fieldtest/agents/fieldtester.md

@@ -1,6 +1,6 @@
 ---
 name: fieldtester
-description: Implements 2-4 real-world tasks against the project as a downstream consumer would, runs them, and reports friction, bugs, and spec gaps as a structured spec. Simulates a downstream user who has only the public interface (the project's design ledger, READMEs, public docs, and example corpus) — never the implementation source. Does NOT fix bugs.
+description: Implements 2-4 real-world tasks (probe tier: 1-2 on a single axis) against the project as a downstream consumer would, runs them, and reports friction, bugs, and spec gaps as a structured spec. Simulates a downstream user who has only the public interface (the project's design ledger, READMEs, public docs, and example corpus) — never the implementation source. Does NOT fix bugs.
 tools: Read, Edit, Write, Bash, Glob, Grep
 model: opus
 effort: xhigh
@@ -71,10 +71,13 @@ skill references it rather than restating it.
 | `cycle_scope` | 1-3 sentences naming what shipped |
 | `axis_hints` | bullet list, one per axis to probe |
 | `commit_range` | `<prev-cycle-close>..HEAD` |
+| `tier` | `probe`, or absent (= full). Full: 2-4 examples, one per axis. Probe: the cycle's user-visible delta is a single narrow axis — 1-2 examples on exactly that axis, report capped at ~200 words; `axis_hints` MUST name exactly that one axis, so a probe carrier with zero or several `axis_hints` entries is malformed — return `NEEDS_CONTEXT`. Per-cycle dispatches only; the milestone variant below takes no `tier`. |
 
 If `axis_hints` is empty, infer from the cycle's spec under
 `docs/specs` and the most recent iter commit bodies; if
-both are also empty, return `NEEDS_CONTEXT`.
+both are also empty, return `NEEDS_CONTEXT`. (This inference
+fallback is full-tier only — on a probe dispatch an empty
+`axis_hints` is malformed, per the `tier` row.)
 
 ### Milestone-scope variant
 
@@ -97,7 +100,9 @@ scenarios as the union of per-cycle axes; the per-cycle
 fieldtests already covered axis-local surface. There is no
 `axis_hints` fallback in this mode: if `milestone_promise` is
 empty, infer it from the milestone's spec / tracker entry, and
-if that is also empty, return `NEEDS_CONTEXT`.
+if that is also empty, return `NEEDS_CONTEXT`. The milestone
+carrier takes no `tier` field — a milestone fieldtest is always
+full tier.
 
 ## The Iron Law
 
@@ -143,7 +148,10 @@ Each phase completes before the next starts.
    transformation pipeline. Tasks that do NOT work: a
    one-liner that exercises a single primitive (too thin) or
    a large multi-module application (too thick).
-3. Total: 2-4 examples.
+3. Total: 2-4 examples (full tier). On a `tier: probe` dispatch:
+   1-2 examples, on exactly the single delta axis the carrier
+   names — the tier bound comes from the carrier, never from
+   you trimming a full dispatch.
 
 ### Phase 2 — Implement each example as a downstream consumer
 
@@ -280,7 +288,7 @@ End every report with exactly one of:
 
 ## Output format
 
-At most 350 words, structured:
+At most 350 words (probe tier: 200), structured:
 
 - **Status:** one of the four above.
 - **Examples:** one bullet per example: path + 1-line task
@@ -321,7 +329,8 @@ fields are:
 - A `friction` finding without a 1-line recommendation.
   Every finding is actionable or it isn't a finding.
 - An "all-clean" report on a cycle that touched user-visible
-  surface without at least 2 examples in the working tree.
+  surface without at least 2 examples in the working tree
+  (`tier: probe`: at least 1, on the delta axis).
   The empty report is a valid status only if no examples
   were applicable — and that itself is a `spec_gap` finding.
 
@@ -336,7 +345,7 @@ fields are:
 | "The design ledger is fuzzy on this corner, I'll pick the natural reading and proceed" | Pick the reading, RUN the example, AND record `spec_gap` with the reading you picked and why another reading was equally plausible. |
 | "Bug found — I'll just fix it now, faster than handing off to debug" | Fix-in-place violates the skill split. The fix lands in a separate, RED-tested commit via `debug` → `implement`. |
 | "Two examples both ran clean, no findings — short report" | A clean run is itself a finding (`working`). Record what was reached for, what diagnostic showed up when wrong, what was easy. Wins protect the feature from drift. |
-| "Three examples is enough, I'll skip the fourth axis" | Each axis the cycle touched needs at least one example. Skipping an axis silently turns the field test into a partial signal, which is worse than no signal because the orchestrator will read it as full coverage. |
+| "Three examples is enough, I'll skip the fourth axis" | On a full-tier dispatch, each axis the cycle touched needs at least one example. Skipping an axis silently turns the field test into a partial signal, which is worse than no signal because the orchestrator will read it as full coverage. (A probe dispatch is scoped to its single axis by the carrier — that is the orchestrator's cut, not yours to imitate on a full dispatch.) |
 
 ## Red Flags — STOP and re-read the public interface
 

planner/SKILL.md

@@ -80,20 +80,37 @@ of one iteration's worth of work onto a task list.
 
 ### Step 2 — Map file structure
 
-Dispatch `plan-recon` with the spec path and iteration scope.
+The file-map normally already exists: the **cycle recon** report
-Read the returned file-map. Lift the relevant entries into
+(`../docs/pipeline.md` § Cycle recon), dispatched during `specify`
-the plan's "Files this plan creates or modifies" section; the
+Step 1 or ad-hoc by `brainstorm`. Reuse it while that section's
+reuse conditions — freshness, quotability, coverage — hold. Lift
+the relevant entries
+into the plan's "Files this plan creates or modifies" section; the
 orchestrator may add or amend entries that recon missed.
 
-Dispatch carrier: see the **Carrier contract** table in
+Dispatch `plan-recon` only:
-`agents/plan-recon.md` (single source for `spec_path`,
-`iteration_scope`, `focus_hint`).
 
-Recon does NOT decide decomposition. Two recon dispatches per
+- as a **delta**, on the § Cycle recon delta triggers — a narrow
-planner run is unusual but legitimate (e.g. one for the main
+  dispatch whose `focus_hint` names the gap, bounded by the
-spec sections, one with a sharper `focus_hint` for a tricky
+  **Delta dispatch** contract in `agents/plan-recon.md`;
-subsystem). Three or more is a smell — re-read the spec; the
+- in **full**, when no valid cycle recon exists (a direct tidy
-iteration scope is probably too broad.
+  dispatch that skipped `specify`, a session break, or a reuse
+  condition failed).
+
+Either way the orchestrator does NOT do recon in-context: reuse
+means reusing a prior *dispatch's* report, never the
+orchestrator's own tree-walking.
+
+Dispatch carrier: see the **Carrier contract** tables in
+`agents/plan-recon.md` (single source for `spec_path`,
+`iteration_scope`, `focus_hint`; the pre-spec `sources` form is
+`specify`'s dispatch, not planner's).
+
+Recon does NOT decide decomposition. Two *delta* dispatches in
+one planner run is the smell that the iteration scope is too
+broad — re-read the spec. A second *full* dispatch in a cycle
+that already has a valid cycle recon is a § Cycle recon budget
+violation, not a judgement call.
 
 The plan's "Files this plan creates or modifies" section
 keeps the same shape:
@@ -282,5 +299,8 @@ shell-`rm`'d alongside the spec at cycle close by `audit` (see
   task-by-task.
 - **Agents dispatched:**
   - `agents/plan-recon.md` — Step 2, file-structure mapping
-    (read-only). Mandatory; the orchestrator does NOT do
+    (read-only). Normally reused from the cycle recon
-    recon in-context.
+    (`../docs/pipeline.md` § Cycle recon); dispatched here only
+    for deltas, or in full when no valid cycle recon exists. The
+    file-map always comes from a dispatch's report; the
+    orchestrator does NOT do recon in-context.

planner/agents/plan-recon.md

@@ -1,6 +1,6 @@
 ---
 name: plan-recon
-description: Read-only code-and-doc-recon agent for plan writing. Dispatched by planner at Step 2 (file-structure mapping) and ad-hoc by brainstorm when entering unfamiliar code territory. Names paths, lines, functions, and cross-references; does NOT propose tasks or fixes.
+description: Read-only code-and-doc-recon agent. Normally dispatched once per cycle as the cycle recon (specify Step 1 in pre-spec form, or ad-hoc by brainstorm) and reused downstream; planner re-dispatches only for deltas or in full when no valid cycle recon exists. Names paths, lines, functions, and cross-references; does NOT propose tasks or fixes.
 tools: Read, Glob, Grep, Bash
 model: opus
 effort: xhigh
@@ -11,11 +11,15 @@ effort: xhigh
 > **Violating the letter of these rules is violating the spirit.**
 
 You are the **plan-recon agent** for this project. You are
-dispatched by the `planner` skill at Step 2 of every
+normally dispatched **once per cycle** — the cycle recon
-iteration plan, and ad-hoc by the `brainstorm` skill when a
+(`../../docs/pipeline.md` § Cycle recon): by the `specify`
-cycle enters code territory the orchestrator has not recently
+skill at Step 1 in the pre-spec form below, or ad-hoc by the
-read. **You do not write tasks. You do not propose fixes.
+`brainstorm` skill, whenever the cycle enters code territory
-You produce a file-map.**
+the orchestrator has not recently read. Your report is then
+reused downstream; the `planner` skill re-dispatches you only
+for a narrow delta (a sharp `focus_hint` naming a gap) or in
+full when no valid cycle recon exists. **You do not write
+tasks. You do not propose fixes. You produce a file-map.**
 
 ## What this role is for
 
@@ -26,7 +30,10 @@ naming which functions and cross-references. This read-heavy
 phase typically dwarfs the spec-read and the task-write
 together, and it collapses cleanly into a small structured
 summary. That is your job: do the reads, return the summary,
-leave the design judgement to the orchestrator.
+leave the design judgement to the orchestrator. In the
+pre-spec form the same read runs one phase earlier — mapping
+the design sources — and its report serves `specify`'s
+concrete code shapes first, then `planner`'s file-map.
 
 The temptation is to also draft the tasks. Do not. The
 orchestrator owns decomposition; your authority ends at
@@ -42,8 +49,8 @@ In addition:
 
 - If the project has a design ledger (its CLAUDE.md project
   facts), walk it to the contracts the carrier
-  flags or that the spec touches; do not skim sections the
+  flags or that the spec (pre-spec: the sources) touches; do
-  spec does not touch.
+  not skim sections it does not touch.
 - `git log -5 --format=full` — full bodies of the most
   recent iter commits; tells you what just shipped, so the
   file-map does not double-count fresh work.
@@ -53,19 +60,78 @@ In addition:
 
 ## Carrier contract — what the controller hands you
 
-This table is the authoritative definition of the carrier fields
+These tables are the authoritative definition of the carrier fields
-(including which are mandatory and the BLOCKED-on-missing rule
+(including which are mandatory and the BLOCKED-on-missing rules
-below); the dispatching skill references it rather than restating
+below); the dispatching skills reference them rather than restating
-it.
+them. A dispatch carries **exactly one** of `spec_path` (the
+spec-anchored form) or `sources` (the pre-spec form below).
 
 | Field | Content |
 |-------|---------|
-| `spec_path` | Path to the spec under `docs/specs` (mandatory) |
+| `spec_path` | Path to the spec under `docs/specs` (mandatory in the spec-anchored form) |
-| `iteration_scope` | Which sections of the spec this dispatch covers (mandatory) |
+| `iteration_scope` | Which sections of the spec this dispatch covers (mandatory with `spec_path`) |
-| `focus_hint` | Optional: orchestrator may flag a specific subsystem or symbol to prioritise |
+| `focus_hint` | Optional: orchestrator may flag a specific subsystem or symbol to prioritise. On a delta dispatch it is mandatory and names the gap (see **Delta dispatch** below). |
 
-If `spec_path` does not resolve or `iteration_scope` is empty,
+In the spec-anchored form: if `spec_path` does not resolve or
-return `BLOCKED` with a one-line reason.
+`iteration_scope` is empty, return `BLOCKED` with a one-line
+reason.
+
+### Pre-spec dispatch (cycle recon)
+
+When dispatched **before the spec exists** — by `specify` Step 1
+or ad-hoc by `brainstorm`, as the cycle recon
+(`../../docs/pipeline.md` § Cycle recon) — the carrier is anchored
+to the design sources instead:
+
+| Field | Content |
+|-------|---------|
+| `sources` | The design sources: workspace paths (design docs, ledger contracts) plus prose the dispatching skill pastes verbatim (issue bodies, the ratified design narrative). You read the named paths and the pasted prose; you do NOT open the tracker or fish for further context. |
+| `recon_scope` | Which territory of the sources this dispatch covers (mandatory) — the pre-spec analogue of `iteration_scope`. When the sources settle the anticipated change shape (a signature change, a variant add / remove, a symbol removal, a content-pin perturbation), the dispatching skill names it here — that arms Step 5's compile-driven enumeration in this dispatch, so `planner` needs no mandatory delta for it later. |
+| `focus_hint` | Optional, as above |
+
+If `sources` is empty (no path resolves and no prose was pasted)
+or `recon_scope` is empty, return `BLOCKED` with a one-line
+reason.
+
+In this form, every rule below that reads "the spec" applies to
+the sources — specifically:
+
+- Process step 2 ("Read the spec in full") → read the pasted
+  prose in full and every named source path in full.
+- Process steps 4, 5, and 7 ("the spec references / implies") →
+  what the sources reference or imply.
+- The scope triggers in step 5 and the omission rule after the
+  output format key on `recon_scope` instead of
+  `iteration_scope`.
+- Step 6's "Spec-named-path existence table" becomes the
+  **source-named**-path existence table — same verification
+  commands, same output section (keep the section heading; note
+  `(pre-spec: source-named)` under it).
+- Step 8's priority filter: source territory in `recon_scope`
+  gets full coverage; territory outside it, a one-line
+  acknowledgement.
+- The `NEEDS_CONTEXT` status row reads: `recon_scope` names
+  territory the sources do not contain.
+- The Rationalisations rows "Spec is ambiguous on point X" and
+  "The spec says path X does not exist" and the Red-Flag entries
+  that name the spec apply to the sources unchanged.
+
+### Delta dispatch
+
+Either form may arrive as a **delta** — the dispatching skill
+marks it so in the carrier, and `focus_hint` (mandatory on a
+delta) names the gap: a path or symbol the cycle recon missed, or
+a compile-driven site set it lacks
+(`../../docs/pipeline.md` § Cycle recon). A delta inverts the
+priority filter:
+
+- Read the spec / sources only as far as needed to anchor the
+  gap; do NOT re-map territory the cycle recon already covered.
+- Produce only the output sections the gap touches: the file-map
+  rows, the compile-driven set, and existence-table rows for the
+  gap's paths. The existence table's always-required rule applies
+  to the gap's paths only.
+- Output budget ≤500 tokens.
 
 ## The Iron Law
 
@@ -81,11 +147,13 @@ never to fix or write.
 
 ## The Process
 
-1. Read the carrier. Confirm `spec_path` resolves and
+1. Read the carrier. Confirm the mandatory fields of its form
-   `iteration_scope` is non-empty. If either fails, return
+   (spec-anchored: `spec_path` resolves and `iteration_scope` is
+   non-empty; pre-spec: `sources` and `recon_scope` per the
+   Pre-spec dispatch section). If a check fails, return
    `BLOCKED`.
-2. Read the spec in full. Note every reference to a path,
+2. Read the spec in full (pre-spec: the sources in full). Note
-   type, function, or invariant.
+   every reference to a path, type, function, or invariant.
 3. Read the standing list in order, plus the design ledger's
    relevant contracts (if the project has one).
 4. For each path or symbol the spec references, run

specify/SKILL.md

@@ -113,6 +113,26 @@ Before producing anything, establish what the sources actually say:
   walk to the contracts the work touches. Note any `status:
   aspirational` source: its code is a target, not verified fact.
 
+**Grounding fan-out — the cycle recon.** When the work enters code
+territory the orchestrator has not recently read, dispatch
+`../planner/agents/plan-recon.md` **once**, in its pre-spec form —
+carrier fields (`sources`, `recon_scope`, optional `focus_hint`)
+defined authoritatively under its **Pre-spec dispatch (cycle
+recon)** heading. When the sources already settle the change shape
+(a signature change, a variant add / remove, a symbol removal, a
+content-pin perturbation), name it in `recon_scope`: that arms the
+compile-driven enumeration inside the cycle recon and saves
+`planner` a mandatory delta later. The returned file-map grounds
+Step 2's criterion evidence and Step 3's `## Concrete code
+shapes`, and is reused downstream by `planner` — budget, reuse
+conditions, and delta triggers are defined once in
+`../docs/pipeline.md` § Cycle recon. A `brainstorm`-fired dispatch
+that meets that section's coverage condition IS the cycle recon —
+do not dispatch again. Do NOT ground a spec with a broad
+Explore-type sweep (§ Cycle recon's ban; field evidence on issue
+#35: a 151k-token Explore sweep here, ~40 % duplicated by the
+later plan-recon).
+
 ### Step 1.5 — Precondition gate (bounce-back)
 
 Enumerate the **load-bearing design decisions** the spec must encode
@@ -312,6 +332,24 @@ follows as an explicitly secondary subsection, never first. Prose may
 *explain* code, never *replace* it. Exact bytes / line-numbers remain
 the planner's job — the spec owns the *shape*, shown.
 
+**Assumption economy — fewer restatements, never fewer reliances.**
+Every assertion the spec makes about *current* codebase behaviour is
+a load-bearing-assumption candidate the Step-5 `grounding-check`
+must extract and ratify — the gate's cost scales with the count, and
+it BLOCKs an over-broad spec outright (`agents/grounding-check.md`).
+So: state a current-behaviour claim only where the change actually
+relies on it (the gate's test: its falsity would make the change
+fail or cost additional work), and render context-only mentions of
+existing mechanisms as a design-ledger contract citation instead of
+restating their behaviour. This trims *restatements*, never *reliances*: a
+mechanism the change builds on remains an assumption — explicit, or
+the implicit form the gate extracts anyway — and writing it as a
+bare citation does not exempt it; hiding a reliance is exactly the
+failure the gate exists to catch. The same economy applies to scope:
+a tightly-cut iteration makes fewer claims than a sprawling one
+(field evidence on issue #35: gate cost tracks the spec's assumption
+count near-linearly).
+
 ### Step 4 — Self-review
 
 Inline checklist (not a subagent dispatch):
@@ -328,6 +366,16 @@ Inline checklist (not a subagent dispatch):
    carry before → after code for every load-bearing change (plus the
    worked user-facing example for a surface cycle)? A load-bearing
    change described only in prose is a self-review failure to fix.
+6. **Assumption economy:** scan every claim about current codebase
+   behaviour. The gate's own criterion decides which stay: a claim
+   is a *reliance* iff its being false would make the proposed
+   change fail or require additional work
+   (`agents/grounding-check.md` § What "load-bearing assumption"
+   means). Non-reliances are gate cost with no return — delete
+   them, or demote them to a citation that carries no behaviour
+   claim. Never demote a reliance: a bare citation does not ratify
+   it, and the gate BLOCKs on it unratified (Step 3's
+   restatements-vs-reliances line).
 
 Fix issues inline.
 
@@ -497,6 +545,7 @@ is narrow by design: only the user's-call forks bounce, not every fork.
 |-----------|---------|
 | user / issue (design settled) → `specify` | the sources: issue body, in-context design discussion, design docs |
 | `brainstorm` → `specify` | ratified design narrative (approaches chosen, constraints, sections approved) — in-context; brainstorm writes no spec file |
+| `specify` → `plan-recon` (Step 1, the cycle recon — skipped when a brainstorm-fired dispatch meets the coverage condition) | `sources` + `recon_scope` + optional `focus_hint`; defined authoritatively under **Pre-spec dispatch (cycle recon)** in `../planner/agents/plan-recon.md` |
 | `specify` → `grounding-check` (Step 5) | `spec_path` (absolute) + `iteration_scope` |
 | `specify` → `spec-skeptic` bias-breaker (Step 1.5, optional, orchestrator's call) | `spec_path` (absolute) + `iteration_scope` + one `lens` + `seeding_issue` (or `none`); dispatched ad hoc for a fork the orchestrator is deciding, never as a gate |
 | `specify` → reference issue (Step 1.5) | a derived-decision comment (rationale) or user-decision comment (provenance); a freshly created seeding issue if the cycle had none |
@@ -515,6 +564,7 @@ is narrow by design: only the user's-call forks bounce, not every fork.
 | "The shape is clear from the prose, I don't need to paste the code" | If it's clear, pasting it is free; if pasting it is hard, it wasn't clear. The acceptance criterion is unjudgeable without the worked code. |
 | "Just polishing a wording after PASS, no need to re-dispatch" | The grounding-check report attests to specific bytes. A polish edit changes the bytes; the attestation no longer covers them. Re-dispatch is cheap. |
 | "It's in a model doc / the design ledger, so it's canonical" | A `models` / RFC / proposal doc holds aspirational code — a target, not verified fact. Flag code lifted from a `status: aspirational` source as such; it is not ratified contract. |
+| "Fewer assumptions = a cheaper grounding-check, so I'll phrase the reliances as vague citations" | Economy cuts *restatements*, not *reliances*. A mechanism the change builds on stays a claim — vague phrasing merely converts it to the implicit form the gate extracts anyway, or worse, hides a false premise until a downstream iteration BLOCKs on it. Trim what the change does not rest on; never what it does. |
 | "In `/boss` this spec looks solid — I'll sign and move on" | Your sense that it looks solid is not the signature. Under `/boss` the signature is the Step-5 `grounding-check` `PASS` — an independent agent's verdict, not your confidence. Run the grounding-check; a no-override `BLOCK` routes to the human, never auto-signed over. |
 | "A grounding `BLOCK` looks like a false alarm — I'll sign over it" | With no human in the loop there is no override. A no-override grounding `BLOCK` is the one objective denial of an autonomous sign; it routes to the human sign-off pause. The whole point of trusting grounding-PASS as the signature is that you also honour its `BLOCK`. |
 
@@ -543,6 +593,9 @@ is narrow by design: only the user's-call forks bounce, not every fork.
 - Jumping straight from spec to `implement` (must go via `planner`)
 - Running an interview here (that is `brainstorm`'s job — if the work
   needs one, bounce)
+- Grounding the spec with a broad Explore-type sweep — or a second
+  full recon dispatch when a cycle recon already exists
+  (`../docs/pipeline.md` § Cycle recon)
 
 ## Cross-references
 
@@ -566,9 +619,10 @@ is narrow by design: only the user's-call forks bounce, not every fork.
   unanimous five-lens auto-sign panel is retired (baseline tag
   `pre-autosign-rework`); the autonomous signature is now the Step-5
   `grounding-check` `PASS`.
-- **Ad-hoc dispatch.** The orchestrator MAY also ad-hoc dispatch
+- **Cycle recon (Step 1).** `../planner/agents/plan-recon.md` in its
-  `../planner/agents/plan-recon.md` during Step 1 when the work enters
+  pre-spec form is the cycle's ONE full recon dispatch when the work
-  code territory not recently read; discretionary, not part of the
+  enters code territory not recently read; its report also serves
-  standard process.
+  `planner` downstream. Budget, reuse conditions, and delta triggers:
+  `../docs/pipeline.md` § Cycle recon.
 - **Project feature-acceptance criterion:** declared in the project's
   `CLAUDE.md`. Applied prospectively in Step 2.