The diff page shows a changed entry's base and built values

outcome

Execute the diff page on one changed Design entry: both values side by side, and the change note on the Spec's page.

assumptions

• The world writes a root with one Spec whose Design entry limit reads ten items, writes its graph with sdp build and keeps it outside the root as the base, changes the entry to twenty items, builds the page set with the base, and reads the Spec's row on the diff page and the line under the Spec page's header.

Examples

Given a base graph in which the Design entry {key: "limit"} of a Spec reads {before: "ten items"}
Given the built graph in which that entry reads {after: "twenty items"}
When the build renders the diff page
Then the Spec's row shows the base value {baseShown: "ten items"} and the built value {nowShown: "twenty items"}
Then the Spec's page carries the changed-since-base line: {changeNote: true}

Verifier bindings

• test:protocol.studio-diff-changed-entry · anchored · test anchor binding present · test/studio-s3.test.ts:210

  External run evidence from test/studio-s3.test.ts

  Test anchors: test:protocol.studio-diff-changed-entry, test:protocol.studio-glossary-same-word-twice, test:protocol.studio-navigation, test:protocol.studio-queue-dependency-first, test:protocol.studio-registers-blocking-first. Specs verified by those bindings: spec:consumers.spec-studio.diff-page, spec:consumers.spec-studio.diff-page.changed-entry, spec:consumers.spec-studio.glossary-page, spec:consumers.spec-studio.glossary-page.same-word-twice, spec:consumers.spec-studio.navigation, spec:consumers.spec-studio.owner-queue, spec:consumers.spec-studio.owner-queue.dependency-first, spec:consumers.spec-studio.registers, spec:consumers.spec-studio.registers.blocking-first.

  Run 1: external run evidence from vitest 4.1.10

  Build: CI 391 · Branch: cursor/media-plan-and-articles-09b1 · Commit: 076cd4f1f85640d8236e5cca1bffffa68ab79a33 · Start: 2026-10-31T15:32:20.471Z · Stop: 2026-10-31T15:34:02.073Z

  Name	Suite	Result	Duration
  executes the bound example against a fresh world	The questions page lists the Specs with a blocking question first (spec:consumers.spec-studio.registers.blocking-first)	passed	35.62 ms
  executes the bound example against a fresh world	The owner queue lists a waiting statement after the one it rests on (spec:consumers.spec-studio.owner-queue.dependency-first)	passed	19.95 ms
  executes the bound example against a fresh world	The diff page shows a changed entry's base and built values (spec:consumers.spec-studio.diff-page.changed-entry)	passed	21.64 ms
  executes the bound example against a fresh world	A word two Specs define appears once per Spec on the glossary page (spec:consumers.spec-studio.glossary-page.same-word-twice)	passed	8.31 ms
  renders declaration citations, decision reasons and design backlog from the shipped answers	Studio register pages	passed	34.81 ms
  reaches each page in order, marks it current and omits every diff reference without a base	Studio register pages	passed	10.2 ms
  refuses malformed base flags and unreadable JSON before extraction	Studio register pages	passed	1.96 ms
  refuses a base in generated output before writing through graph	Studio base comparison	passed	21.29 ms
  refuses a base in generated output before writing through nested	Studio base comparison	passed	15.24 ms
  refuses a base in generated output before writing through file alias	Studio base comparison	passed	17.97 ms
  refuses a base in generated output before writing through root alias	Studio base comparison	passed	6.75 ms
  refuses a base in generated output before writing through input alias	Studio base comparison	passed	10.5 ms
  renders only existing sides for added and removed entries and one value for moved entries	Studio base comparison	passed	13.63 ms
  shows per-Pack diagnostics without no-change claims for invalid graph	Studio base comparison	passed	19.84 ms
  shows per-Pack diagnostics without no-change claims for different schema	Studio base comparison	passed	15.35 ms
  keeps additions, removals, Pack order and anchor bindings apart and escapes compared values	Studio base comparison	passed	24.48 ms
  shows unreadable graph values as the recipe's diagnostics on the named diff page	Studio base comparison	passed	2.54 ms
  leaves the base file unchanged and certifies repeat publication with the same input	Studio base comparison	passed	28.52 ms
  keeps a cycle's round separate from statements that rest on nothing, and lists owner holds	Studio base comparison	passed	12.27 ms
  sorts terms without locale collation and keeps non-letter headings addressable	Studio base comparison	passed	5.74 ms
  orders queue floor options by rung and carries the Pack and floor on each row	Studio base comparison	passed	16.78 ms
  uses authored term keys and orders duplicate terms by Spec id	Studio base comparison	passed	6.7 ms
  reads each owner question's provisional reading from its reader Spec and key	not recorded	passed	9.69 ms
  renders a keying proposal as one line per keyed entry and readable changed rule text	not recorded	passed	9.43 ms
  lists keyed lines in head rule order with rendered text for added, renamed and removed keys	not recorded	passed	14.46 ms
  counts keyed rules apart from changed parts, mixed changes: false	not recorded	passed	6.09 ms
  counts keyed rules apart from changed parts, mixed changes: true	not recorded	passed	6.9 ms
  names one keyed rule in the singular	not recorded	passed	7.97 ms
  marks only members with exclusively keyed changes as keyed only	not recorded	passed	13.49 ms
  renders changed list values as lists instead of raw JSON arrays	not recorded	passed	6.06 ms
  retains the owning list when readable rule text moves to a flow	not recorded	passed	5.57 ms

Requirement drawing

• Satisfying or referencing units: no recorded binding.

Decisions

No decision record named.

No implementation neighborhood recorded.

Runtime observation: not tracked.

Runtime observation: not tracked.

Build attestations: not tracked.

Deployments: not tracked.

Bills of materials: not tracked.