Retire every W unit to Landed — 30-slices.md moves to the kit's current format

CLAUDE.md

@@ -63,7 +63,7 @@ The agent-kit files are canonical. Edit these, never their generated copies unde
 | `design/00-brief.md` | Product vision, scope, non-goals, MVP, and definition of done |
 | `design/10-design.md` | Architecture plus observability, extensibility, replay, capture, client, and content-pack design |
 | `design/20-contract.md` | Core and all kind contracts, including exact types and invariants |
-| `design/30-slices.md` | The W-numbered vertical delivery ledger; W ids are retained because repository history already cites them |
+| `design/30-slices.md` | The vertical delivery ledger in the kit's format: live `## S<n>` slices above `## Landed`, where all 125 W-numbered units are retired to one row each |
 | `design/90-decisions.md` | Decision history, deferred items, and judgement calls to revisit |
 
 Each file contains marked human-document blocks. `build/ConvertTo-HumanDocumentation.ps1`
@@ -93,7 +93,7 @@ they are outputs, not editing surfaces.
 | `06-extensibility.md` | Where the engine can be extended: the **ports** a host supplies (`IdSource`, stores, `Emitter`, `Clock`, `ExperimentSource`), the two composition roots, and the rule that decides — *a host may supply anything that cannot change `serialize()` output*, which makes the determinism boundary the trust boundary. Kinds stay engine-owned per architecture N2 |
 | `05-observability.md` | Logging and tracing as a **separate channel** from `StateChange`: the clock-free `EngineEvent`, the per-resolution emitter handle, sinks, and the boundary that stamps time and trace ids. The invariant is that dropping every event changes nothing |
 | `MVP.md` | The smallest slice that proves the platform, + Definition of Done (finalized) |
-| `TODO.md` | The MVP as ordered **units of work** (W0–W19), each with contract refs, dependencies, and done-criteria; the MVP boundary is marked |
+| `TODO.md` | The delivery ledger: open items carried forward, and one Landed row per retired W unit with its pull requests and criteria range |
 | `OPEN-QUESTIONS.md` | Living register of unknowns, gaps, deferred decisions. §1 is now a **decision log** — the eight MVP-blocking gaps are all resolved; start here for the reasoning behind a contract |
 
 ## The Code — `src/engine/`
@@ -331,8 +331,8 @@ Two distinctions that are easy to get wrong:
 
 - **Non-goals are binding.** Anything listed as a non-goal in `01-vision.md` §5 is out of
   scope even if it looks trivial, even if you are already touching that file.
-- **One unit at a time.** Do not start W<n+1> because you noticed something while doing
-  W<n>. Write it to `90-decisions.md`'s open register instead.
+- **One unit at a time.** Do not start S<n+1> because you noticed something while doing
+  S<n>. Write it to `90-decisions.md`'s open register instead.
 - **No new dependencies** without a decision-log entry naming the alternatives rejected and
   why.
 - **No new public interfaces** that are not in `20-contract.md`. If you need one, stop and
@@ -388,8 +388,10 @@ separate `slice`, `check`, `pr`, `resolve`, `track`, `docs`, `hold` or `resume`.
 `design/00-brief.md`, `10-design.md`, `20-contract.md`, `30-slices.md`, and `90-decisions.md`
 are the canonical inputs. This repository extends the generic kit in two deliberate ways:
 
-- Existing W identifiers remain the slice ids. Renumbering them to S would break plans, tests,
-  issues, changelog entries, and merged history without changing the work.
+- W identifiers are history. Every W unit is retired to a row under `## Landed` with an
+  `<a id="w<n>">` anchor, so existing links still resolve; plans, tests, issues, changelog
+  entries and merged history keep citing them unchanged. New slices are `## S<n>`, numbered from
+  S121 so no S id is ever mistaken for a W id.
 - The design and contract files contain marked, independently generated human pages. Commands
   must read the complete canonical file, including every marked block relevant to the task.
 

agent.md

@@ -68,7 +68,7 @@ README, whose status is deliberately coarse.
 
 - **After a work-unit PR merges or the changelog gains an entry:** update the delivered count,
   completed chapter grouping, current checkpoint, and evidence URL in `roadmapData.ts`. Count
-  `### [x] W…` headings in `design/30-slices.md`, then explicitly account for any merged
+  Landed rows in `design/30-slices.md` that are not cancelled, plus `Status: done` S slices, then explicitly account for any merged
   units that the ledger has not yet recorded in the `completedBeyondTodo` exception list. Update
   the page before describing the new unit as delivered anywhere public. Reconcile `README.md`'s
   coarse status at the same time if it has become misleading, then regenerate

build/Test-Documentation.ps1

@@ -360,6 +360,12 @@ function Get-DocumentationAnchor {
     $counts = @{}
 
     foreach ($line in $masked) {
+        # An inline <a id="..."></a> is an anchor too: the retired-slice rows in
+        # design/30-slices.md carry one each, so links to #w<n> outlive the headings.
+        foreach ($inline in [regex]::Matches($line, '<a\s+id="([^"]+)"\s*>')) {
+            $null = $anchors.Add($inline.Groups[1].Value)
+        }
+
         $match = [regex]::Match($line, '^\s{0,3}#{1,6}\s+(.+?)\s*$')
         if (-not $match.Success) {
             continue