docs: make technical prose concrete

docs/AGENTS.md

@@ -6,7 +6,7 @@ This file defines document structure, Markdown tiers, writing rules, and `verify
 
 These rules apply to human-facing documentation; [Agent Notes](../.agents/notes/README.md) remain outside their scope. A [postmortem](postmortem/README.md) is an incident-scoped reference; chronology records evidence, not a teaching sequence. A document's subject and tree position fix its scope: describe its own subject at appropriate detail and direct children only by purpose, responsibility, and high-level behavior; link to the owning descendant for lower-level detail. Document type does not widen that scope. A reference may be exhaustive only about its own subject. Testing mechanisms, fixtures, and harnesses belong at the lowest owning level; higher documents link there.
 
-Classify every in-scope document as a tutorial or reference. A tutorial follows an ordered path to an outcome and introduces only what each step needs. A reference defines a lookup scope and describes current behavior without depending on a teaching sequence. Separate substantial tutorial and reference content; use a clear structural boundary when either part is small.
+Classify every in-scope document as a tutorial or reference. Tutorials follow an ordered path to an outcome and introduce only what each step needs. References define a lookup scope and current behavior without a teaching sequence. Separate substantial tutorial and reference content; label a section when either part is small.
 
 Before writing a tutorial, privately classify the reader's starting knowledge and each concept as beginner, intermediate, or advanced. Establish prerequisites before dependent concepts, increase difficulty gradually, and move unnecessary advanced material to a later tutorial or reference.
 
@@ -20,18 +20,18 @@ Each fact has one home: the tier whose job it is; elsewhere, link there.
 |---|---|---|
 | Root `AGENTS.md` | Standing orders: rules an agent needs in context in every session, one to three lines each, linking its home | Stories, worked examples, situational procedures, anything restated from a linked home |
 | Subtree `AGENTS.md` (`packages/`, `examples/`, `docs/`, `.agents/notes/`) | Orders specific to that subtree | Repo-wide rules the root file already carries |
-| [architecture.md](architecture.md) | System map: services, loop, capability seams, extension points — read before changing `packages/` | Type shapes (→ subsystems), per-package detail (→ package READMEs), decision rationale (→ Agent Notes), implementation-status annotations |
-| [subsystems/](subsystems/README.md) | One reference page per subsystem: type shapes, semantics, and the generated Cordis surface | Behavior narration (→ architecture.md) |
-| [Agent Notes](../.agents/notes/README.md) | Active decision records: the why, what-was-given-up, and verification contract; `implemented/` notes describe shipped reality in present tense | Migration plans, acceptance-task checklists, fixture walkthroughs, and spec-speak ("should…") once the decision has shipped; archived notes are frozen history, never current authority |
+| [architecture.md](architecture.md) | System map: services, loop, capability seams, extension points — read before changing `packages/` | Type definitions (→ subsystems), per-package detail (→ package READMEs), decision rationale (→ Agent Notes), implementation-status annotations |
+| [subsystems/](subsystems/README.md) | One reference page per subsystem: type definitions, semantics, and the generated Cordis API | Behavior narration (→ architecture.md) |
+| [Agent Notes](../.agents/notes/README.md) | Active decision records: the why, what-was-given-up, and required verification; `implemented/` notes describe shipped reality in present tense | Migration plans, acceptance-task checklists, fixture walkthroughs, and spec-speak ("should…") once the decision has shipped; archived notes are frozen history, never current authority |
 | [postmortem/](postmortem/README.md) | Incident stories — the only tier where war-story narrative belongs | — |
 | [cookbook/](cookbook/adding-a-package.md) | Step-by-step how-tos with numbered verify steps | Design rationale (→ the Agent Note each guide links) |
 | [user/](user/index.md) | Product-facing guides published by the documentation website | Generated reference tables, contributor procedures, decision history |
 | Package README | The per-package contract: config, semantics, limitations, extension points, and [Model Experience](cookbook/adding-a-package.md#4-write-the-package-readme) | JSDoc restatement, generated-catalog restatement (event/tool tables), other packages' concerns |
-| [development.md](development.md) | First-stop contributor onboarding: local setup, daily workflow, and CI shape at summary level; a bilingual pair under the [i18n contract](i18n/README.md) | Runtime/version rationale (→ Agent Notes), gate-by-gate enumerations that drift from `package.json` scripts |
+| [development.md](development.md) | Contributor setup, daily workflow, and a summary of CI; a bilingual pair under the [i18n contract](i18n/README.md) | Runtime/version rationale (→ Agent Notes), check-by-check lists that drift from `package.json` scripts |
 | Generated reference: the per-page `cordis-surface` regions in [subsystems/](subsystems/README.md), the [Cordis core API + inherited tier](cordis-api/context.md), [tool-catalog](tool-catalog.md), [config-catalog](config-catalog.md), [persistence-catalog](persistence-catalog.md), [module-graph.md](module-graph.md) | Exhaustive English sources regenerated from source and freshness-gated; reviewed Chinese counterparts follow the [pairing workflow](i18n/README.md#scope-and-exclusions) | Hand edits to generated English sources or regions; Chinese counterparts update through pairing only |
 | Skills (`.agents/skills/`) | Reusable workflows and specialized decision standards | Product and runtime contracts (→ docs or source) |
 
-Placement: bugs → postmortems; rationale → Agent Notes; procedures → cookbooks; type shapes → subsystems; package contracts → READMEs; standing orders → root `AGENTS.md` with a rationale link.
+Placement: bugs → postmortems; rationale → Agent Notes; procedures → cookbooks; type definitions → subsystems; package contracts → READMEs; standing orders → root `AGENTS.md` with a rationale link.
 
 ## Writing rules
 
@@ -41,8 +41,8 @@ Placement: bugs → postmortems; rationale → Agent Notes; procedures → cookb
 - **Fenced `ts` blocks must compile** (`doc-typecheck`); a pasted type declaration and its original JSDoc use ` ```ts type-equiv `, while a body-stripped public class declaration uses ` ```ts public-api `; register either in the manifest so neither can drift ([mechanics](development.md#documenting-types-verbatim-ts-type-equiv)).
 - **The owning [subsystems page](subsystems/README.md) updates in the same change** that reshapes a documented type. `verify-type-equiv` catches drifted pastes, not never-documented new types; a type is documented on its declaring package group's page ([page scoping](../.agents/notes/implemented/process/2026-08-03-package-anchored-subsystem-pages.md)).
 - **Bilingual pairs update together**: editing either side obligates the counterpart and a re-record in the same change ([i18n contract](i18n/README.md)).
-- **Comments and JSDoc state complete contracts, not reasoning transcripts.** Preserve behavior, timing, modality, exceptions, consequences, and non-obvious orientation; delete narration, test walkthroughs, review analysis, and code restatement. Keep the local contract and link its rationale. Use [dsh-prose-standard](../.agents/skills/dsh-prose-standard/SKILL.md) for details.
-- Write directly: name actors and facts plainly ([decision](../.agents/notes/implemented/process/2026-08-09-concrete-prose-names-actors-and-recorded-facts.md)). Reserve `seam` for the defined capability; avoid metaphorical "gate", "vocabulary", and "surface".
+- **Comments and JSDoc state complete contracts, not reasoning transcripts.** Preserve behavior, failure, timing, ownership, modality, exceptions, consequences, and non-obvious orientation; delete narration, test walkthroughs, review analysis, and code restatement. Keep the local contract and link its rationale. Use [dsh-prose-standard](../.agents/skills/dsh-prose-standard/SKILL.md) for details.
+- Write directly: name actors and facts ([decision](../.agents/notes/implemented/process/2026-08-09-concrete-prose-names-actors-and-recorded-facts.md)). Reserve `seam` for the defined capability. Name the exact check, type, API, operation, or behavior instead of metaphorical "gate", "vocabulary", or "surface".
 
 ## Wordcount Budgets
 
@@ -54,7 +54,7 @@ When the gate goes red:
 2. **Condense** content that belongs here but can be shorter.
 3. **Raise** the ceiling only when the words need the space; justify the manifest diff in the PR. A too-low ceiling is a budget bug.
 
-Ceilings are guardrails, not reduction targets. At or below target, retain at least 5% headroom; above target, freeze the ceiling until relocation or condensation brings the document under target. Lower a ceiling only when the contract still has room, and raise it when content would otherwise be deleted. Targets: root `AGENTS.md` ≤ 1,600 words; `architecture.md` ≤ 1,800; subtree `AGENTS.md` ≤ 600, except `packages/AGENTS.md` ≤ 650 and this file ≤ 1,250; `packages/README.md` ≤ 600. Review governs unbudgeted tiers.
+Ceilings are guardrails, not reduction targets. At or below target, retain at least 5% headroom; above target, freeze the ceiling until relocation or condensation brings the document under target. Lower a ceiling only when the document still has room, and raise it when content would otherwise be deleted. Targets: root `AGENTS.md` ≤ 1,600 words; `architecture.md` ≤ 1,800; subtree `AGENTS.md` ≤ 600, except `packages/AGENTS.md` ≤ 650 and this file ≤ 1,250; `packages/README.md` ≤ 600. Review governs unbudgeted tiers.
 
 ## The slop checklist