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Prepare release notes for ConfigKit 1.1.0

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docs/adr/0021-sequence-resolution-correspondence.md
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@@ -60,5 +60,6 @@ and lifecycle ordering in [ADR 0018](0018-cli-after-structural-resolution.md).
Resolution auditing and inspection must share entry-to-final correspondence,
including explicit unmatched records, while preserving historical coordinates
and conservative sensitivity masking. Source assembly and public path types do
not change. The [implementation plan](../roadmap/implementation.md) tracks the
work; the [configuration contract](../config.md) owns implemented behavior.
not change. The completed implementation plan is preserved in Git history at
`7e53863:docs/roadmap/implementation.md`; the
[configuration contract](../config.md) owns implemented behavior.

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## Baseline validation
The completed field-level sequence resolution roadmap, implementation plan, and
resolved audit findings are preserved in Git history at `7e53863` under
`docs/roadmap/`. For example:
```sh
git show 7e53863:docs/roadmap/implementation.md
git show 7e53863:docs/roadmap/remediation.md
```
The [configuration contract](config.md#recorded-application-resolution) owns
current resolution behavior, and [ADR 0021](adr/0021-sequence-resolution-correspondence.md)
records the correspondence decision.
The completed filesystem-source and underlay roadmap, original feature request,
implementation plan, and resolved remediation record are preserved in Git history
at `b604aa1` under `docs/roadmap/`. Current behavior belongs to the

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# ConfigKit v1.1.0
ConfigKit now accepts field-level resolution records inside lists and follows
registered records across position changes when reporting their provenance and
history. This release also standardizes more release validation on ReleaseKit.
## Field-level resolution in lists
Applications can normalize or derive a field inside a list and record that
field directly. For example, changing `/resources/0/path` can be covered by
`RecordNormalization` at that path, without recording the entire `/resources`
list when no other changes require coverage.
For ordinary lists of equal length, resolution auditing compares corresponding
positions recursively. Positions are addresses; ConfigKit does not infer an
element's identity from similar values. A length change still requires a record
for the list or an ancestor.
For collections registered through `Definition.SequenceIdentities`, ConfigKit
matches records between the resolution-entry and final snapshots when both
endpoints have valid, unique identities. Field edits can be recorded individually.
Changes to identity order or membership still require list or ancestor coverage;
changing an identity is treated as removal and addition. When matching is
unavailable, a changed registered collection is audited as a whole. Existing
final identity validation remains in place, allowing resolution to repair entry
values.
See [recorded application resolution](../config.md#recorded-application-resolution)
for the complete rules.
## Matched history and inspection
For eligible registered collections, inspection at a surviving record's final
position follows its own entry evidence, including earlier values, input
explicitness, and source attribution. A record no longer inherits the evidence
of a different record that previously occupied its final position. Original
source coordinates remain intact, while reported operation paths follow the
matched final record.
Collection inspection retains removed records' evidence. Removed fields of
surviving moved records remain available through metadata history and
explanation, including deep inherited fields. Sensitivity propagation protects
matched and removed evidence and recorded dependencies; detached before/after
snapshots remain conservatively masked.
Correspondence lookup, sensitivity propagation, and resolution-change ordering
reuse indexes, a work queue, and prepared pointer strings to avoid repeated
prefix construction, full-map passes, and formatting during sorting. No
end-to-end performance improvement is claimed.
## Compatibility
This is a backward-compatible extension of resolution auditing and inspection.
Existing callbacks that record a whole list remain supported. Records and helper
targets for surviving values refer to final positions; helpers do not follow
later moves automatically. `Resolution.EntryInfo` and `Resolution.IsExplicit`
retain their fixed entry-snapshot meaning.
Public effective-configuration diffs continue to report list changes atomically.
Source composition, collection merge operations, configuration syntax, and public
path addressing are unchanged. No new public Go symbols are required.
The consumer minimum remains Go 1.27.0, and the YAML dependency is unchanged.
Linux amd64 and arm64 remain release-validated; macOS remains best-effort.
## Release tooling
ReleaseKit advances from v0.6.0 to v0.8.0. The runbook uses the module-selected
`go tool releasekit` command and documents saved publication attempts and
reconciliation after failed or uncertain tag pushes.
ReleaseKit now checks committed Markdown links and rejects filesystem dependency
replacements during candidate validation. The custom documentation-link Go test
is removed, so automated link feedback occurs during candidate validation rather
than ordinary Go tests. Source publication and hosted Gitea delivery remain
separate outcomes; CI remains outside release gates. See the
[release procedure](../release.md).
[COPYRIGHT](https://forge.maximumdirect.net/base-layer/configkit/src/tag/v1.1.0/COPYRIGHT) | [LICENSE](https://forge.maximumdirect.net/base-layer/configkit/src/tag/v1.1.0/LICENSE) | [ATTRIBUTION](https://forge.maximumdirect.net/base-layer/configkit/src/tag/v1.1.0/docs/oss/attribution.md)

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# Sequence resolution and inspection implementation plan
Status: complete.
## Scope and execution
Implement the agreed [feature roadmap](resolution-sequences.md) from baseline
`9adcf14`. The target is field-level resolution auditing for ordinary lists and
identity-aware resolution history for application-registered collections. This
plan is for a Luna coding agent executing the numbered stages in order during
one end-to-end sprint. Intermediate stages may leave integration incomplete or
temporarily fail to compile; do not build compatibility adapters merely to make
each intermediate state green. The completed sprint must satisfy the whole
roadmap, including history, metadata, redaction, and removed-record inspection.
Read [agent policy](../policy/agents.md), [architecture
policy](../policy/architecture.md), [testing policy](../policy/testing.md), and
[documentation policy](../policy/documentation.md), using the
[development guide](../development.md) for orientation and commands. Read the
roadmap as the target contract; current [resolution
documentation](../config.md#recorded-application-resolution) describes the
baseline that this work deliberately extends. Preserve unrelated changes.
Use the existing toolchain required by `go.mod` and acquired dependencies.
This sprint does not change module versions, release machinery, configuration
syntax, public path types, collection composition, or identity selector scope.
There are no benchmarks, timing thresholds, CI waits, or additional release gates
required by this plan. Prefer focused tests during implementation and the final
checks in Stage 13. Commit completed nonempty units under the agent policy.
## Implementation decisions
- Keep `compareConfigurationValues` atomic for sequences. Add a separate private
resolution comparison operation; validation and public effective-value diff
retain their existing comparison semantics.
- Ordinary equal-length lists compare recursively by position. A length change
requires coverage at the list or an ancestor. Registered lists use matching
only when both endpoint sequences have valid, unique identities under the
applicable application registration. A registered collection that cannot be
matched uses whole-list auditing when changed; equality still requires no
record. Do not emit matching-eligibility errors or move final validation earlier.
- Match within the same concrete registered collection destination, using the
already compiled application policy. Use payload identity rules, including
ordinary late `extends` fields. YAML-only declarations and matching across
different collection destinations are outside this correspondence.
- A valid registered collection's changed identity order or membership requires
whole-list coverage. Continue matching surviving records for inspection even
when that structural delta already covers all field changes.
- Records and helper verification address final positions for surviving values;
entry queries retain entry coordinates. A final record's missing descendant
may still refer to a removed value on its matched entry record. A wholly removed
position retains the existing historical meaning. When an address is reused,
the surviving record takes precedence; use the container to record removal of
the former occupant. Helpers never follow moves automatically.
- Use one private correspondence result throughout resolution and inspection.
Store concrete entry/final record-prefix pairs and explicit unmatched cases,
not a mutable identity registry or a full tree copy per field. Source
coordinates, original input payloads, and callback entry metadata remain fixed.
- A surviving record query selects its own entry lineage. A newly added identity
has no prior occupant's lineage. Collection queries retain physical before/after
order and removed evidence; absent historical positions remain positional.
Reuse existing source, inheritance, CLI, and decoding history semantics within
the selected entry lineage; do not rematch identities across earlier phases.
- Record reasons, dependencies, equal-valued intent, resolution origins, and
coalescing retain their existing semantics. Identity correspondence supplies
earlier evidence; it does not replace the recorded application operation.
- Reuse the shared history model and snapshot masking boundary. Preserve
historical sensitivity and dependency closure, including conservative masking
already required by the current contract. This feature promises no reduction
in masking and adds no unredacted inspection mode.
Suggested new private file names below are implementation locations, not public
interfaces. Keep responsibilities cohesive and use existing helpers where they
already express the needed behavior. Do not introduce a general comparison
framework, new public selectors, caches, or mutation logging for this feature.
## Stage 1 — Record the architectural extension and inspect the baseline
**Status:** Complete. The focused engine baseline and documentation-link checks passed.
**Scope:** decision documentation and a focused starting check.
1. Add `docs/adr/0021-sequence-resolution-correspondence.md` with Accepted status
using the documentation policy's ADR format. Record the approved positional
and registered-identity rules, the entry-to-final boundary, and the distinction
between resolution auditing and public atomic diff presentation. Include
removed/reused-position inspection and final-only registration validation.
Keep discussion of alternatives in Alternatives Considered; focus on ConfigKit.
2. Relate the decision to ADRs 0003, 0010, 0017, and 0018. This extends resolution
inspection and preserves their source-assembly, diff, and lifecycle choices;
do not rewrite accepted decision bodies or mark them superseded wholesale.
3. Read `resolution.go`, `load_metadata.go`, `load_result.go`, `override_context.go`,
`history_model.go`, `history_resolution.go`, `history_select.go`, `history.go`,
`explain.go`, `secret.go`, and `snapshot.go` in `internal/engine`. Note that
engine `Resolution.InputInfo` backs public `Resolution.EntryInfo`.
4. Run the existing focused engine tests for resolution, history, sequence
identity, and diff to establish the starting state. Do not change existing
expectations simply because the new contract will later allow more precision.
**Completion:** one architectural decision records the scope without claiming
implementation completion. No current-behavior reference is updated yet.
## Stage 2 — Build endpoint collection correspondence
**Status:** Complete. Focused correspondence tests cover identity matching, fallback, and dynamic selectors.
**Scope:** private, pure matching logic, preferably in
`internal/engine/resolution_correspondence.go`.
1. Build a correspondence object from the canonical post-CLI entry tree, final
projected tree, and compiled `sequencePolicy`. Reuse `identityFieldsAt` and
`validateNormalizedSequenceIdentityFrom` with `sequencePayloadRecord`, or
extract a small shared non-reporting helper if necessary. Reuse exact tuple
equality; do not implement another numeric or compound-key comparison.
2. Distinguish ordinary, eligible registered, and ineligible registered sequences.
For eligible pairs, retain entry-to-final and final-to-entry item indexes and
whether ordered identity membership changed. Distinguish an unmatched final
item from a matched item at the same numeric index.
3. Use tuple lookup tables and ordered sequence traversal. Resolve each record's
identity once per endpoint. Reuse mapping indexes rather than scanning every
record for every match. Keep identity tuples private and out of diagnostics.
4. Provide shape-aware prefix translation for final record descendants to their
corresponding entry paths, with an explicit no-entry result for additions.
Unregistered paths remain positional. Handle missing descendants without
borrowing the previous occupant's field; distinguish numeric keys and indexes.
5. Honor existing selector traversal: mappings and dynamic mapping namespaces
can lead to registered lists; selectors do not traverse list indexes. Nested
ordinary lists still receive recursive positional comparison later.
**Verification:** focused pure behavior tests for reorder, insertion/removal,
identity change, empty collections, malformed/duplicate endpoints, compound and
typed scalar identities, and exact versus dynamic registrations. Reuse existing
identity equality tests rather than repeating their entire scalar matrix.
**Completion:** correspondence is deterministic and detached from callback state;
invalid entry identities remain repairable and no new load failures are added.
## Stage 3 — Compare ordinary lists recursively during resolution
**Status:** Complete. Focused resolution and public diff checks passed.
**Scope:** resolution-only delta production and its initial integration.
1. Add a private resolution comparator, preferably in `resolution_compare.go`.
Reuse canonical scalar equality and existing mapping comparison behavior.
Compare equal-length ordinary sequences element by element recursively.
2. Emit a list-level replacement for ordinary length changes. Keep additions,
removals, null, and kind replacements at the appropriate affected path.
Until Stage 4 connects identity matching, registered sequences can remain
conservative; do not change the shared atomic comparator.
3. Preserve canonical diagnostic ordering and existing exact/ancestor coverage
through `resolutionCoverageIndex`. Never let a descendant record cover a
container delta. Avoid comparing a complete subtree before recursively
comparing it again at every level.
4. Use the new comparator in `runResolution`. Review `resolutionResult.deltas`
consumers; metadata integration is completed in Stage 6.
**Verification:** field-only recording inside an ordinary list succeeds; a second
unrecorded field fails at its own path; length changes still need a container
record. Cover nested mappings/lists and explicit zero, false, and null through
representative cases. Existing public diff/comparator tests must remain atomic.
## Stage 4 — Integrate registered comparison and paired record snapshots
**Status:** Complete. Focused resolution and identity tests passed, including repair and helper-target checks.
**Scope:** auditing, record validation, and before/after capture.
1. Pass `request.sequencePolicy` through `resolveLoadInput` to `runResolution`;
reuse the preflight-compiled application policy. Build correspondence once
after final projection, before coverage and snapshot capture.
2. In eligible collections, recursively compare matched records at final paths.
Emit a structural list delta for membership/order changes independently of
field deltas. Preserve pairs even when no additional field delta is needed.
Ineligible changed registered lists use an atomic delta; unchanged ones do not.
3. Validate each record against the correctly paired entry and final target.
A helper must still equal the final value at its literal declared path. For
additions, the before side is absent; do not fall back to an old occupant.
For removals, use the addressing decisions above and existing schema checks.
4. Extend private resolution snapshots/results with the paired path information
needed downstream. Capture a field's before value from its matching entry
record; a collection/root snapshot still contains the complete physical tree.
Preserve cloned snapshots, record coalescing, reason/dependency order,
normalization dominance, and equal-valued intent.
**Verification:** registered field edits succeed; reorder plus only a field
record fails; container coverage succeeds; identity changes require container
coverage. Check invalid-entry repair and unchanged invalid collections without
inventing an early identity error. Final invalid values still fail at the
existing final identity validation boundary. Include a helper whose target was
moved afterward and no longer matches its declared final address.
## Stage 5 — Retain correspondence in the shared history owner
**Status:** Complete. Focused history, correspondence, and retained-budget checks passed.
**Scope:** evidence transport, ownership, and retained-node accounting.
1. Extend `historyResolutionPayload` to own the compact correspondence and paired
snapshot coordinates. Transfer them from the audited result through
`resolveLoadInput` and `observeResolutionEvidence`; retain no callback or
mutable configuration references.
2. Keep original record observations and `resolutionReplayGroup` coalescing.
Index the actual concrete before and after shapes, using paired paths for
fields and the physical paths for container snapshots. Do not globally
rewrite earlier observations or duplicate all source evidence under each
moved record's final prefix.
3. Keep one scratch replay tree. Paired before paths describe evidence, not
instructions to move scratch nodes one assignment at a time. Apply a
structural container's final subtree once, as its existing replay group does.
4. Include any newly retained document roots in `historyModel.documentRoots`
and the existing admission check before secret lookup and validation. Prefer
borrowing already immutable checkpoint/snapshot roots. Release temporary
identity tables unless needed by frozen queries; retain positional pairs,
not identity text, where sufficient.
**Verification:** extend the focused history-resolution tests to check behavior
with paired sides and overlapping records. Reuse history-budget tests to prove
that new retained roots cannot escape accounting and shared roots count once.
Do not assert an incidental struct layout or a fixed number of internal calls.
## Stage 6 — Refresh effective metadata using the matched entry record
**Status:** Complete. Focused resolution, metadata, validation, and secret checks passed.
**Scope:** presence, origins, and post-resolution diagnostic locations.
1. In `applyResolutionMetadata` and `refreshResolutionFields`, seed final fields
from their corresponding entry fields rather than the previous occupant of
the final index. Use shape-aware entry lookup for exact descendants. Added
identities and newly created fields have no invented input explicitness.
2. Apply recorded resolution origins using the existing covering-record and
finer-record semantics. A structural normalization remains a resolution
operation, including when an unchanged record moves beneath it. Source
lineage remains available through history; do not suppress the operation to
make a field appear to come directly from its original file.
3. Remove effective fields absent from the final tree and rebuild effective path
shapes. Preserve positional behavior outside eligible registered collections.
4. Ensure `documentWithMetadataLocations` and `metadataFieldLocation` can obtain
the matched record's source evidence for later secret/validation diagnostics.
Preserve source IDs and passive contexts. Do not mutate the fixed entry view,
move source-document coordinates, or fabricate sources for additions.
**Verification:** moved records with different explicit/defaulted descendants
retain their own presence; added records do not inherit old explicitness. Test
deleted fields and zero/null states, resolution origins, and source attribution.
During the callback, `EntryInfo` and `IsExplicit` must keep their old coordinate
meanings. History-based location fallback becomes fully usable in Stage 7.
## Stage 7 — Select history through the correct entry coordinate
**Status:** Complete. Focused history and matched-location checks passed.
**Scope:** shared history query selection and metadata history projection.
1. Add a query-local coordinate description to the existing history selection
machinery. For a final item or a descendant under an eligible collection,
distinguish matched entry coordinates, no-entry additions, and unchanged
positional queries. A removed descendant of a surviving record uses that
record's correspondence even if the descendant is absent finally.
2. For baseline, sources, inheritance, decoding, and CLI, select the matched
entry path's existing evidence. Do not select the prior occupant of the final
index. For an added identity, suppress that prior occupant's earlier evidence.
Preserve the existing chronological and source-composition behavior at the
selected entry path; this does not infer identity across historical tiers.
3. For resolution, select paired observations and their covering operation.
Keep original-record attribution and reason/dependency lists available even
when explanation uses a coalesced replay event.
4. Project `Change.Path` into the queried final coordinate where lineage is
followed, retaining a meaningful affected path or container ancestor. Keep
original source `Location` coordinates and recorded dependency paths intact.
Derive `Previous` from the selected lineage, not unrelated positional records.
5. Keep collection/ancestor queries on physical history coordinates so they retain
the complete operation. Use existing indexes for selection; do not rescan
every historical fact separately for every final item.
**Verification:** `Metadata.History` and historical location lookup follow the
matched record through a swap with distinct source locations. Added records do
not claim the previous occupant's definitions. Existing key/index shape and
ancestor-replacement selection tests remain valid. Stages 8 and 9 complete value
replay and removed-position handling using this same selection owner.
## Stage 8 — Replay earlier explanation values at the entry coordinate
**Status:** Complete. Focused source, inheritance, CLI, history, and explanation checks passed.
**Scope:** pre-resolution explanation replay, including inheritance and CLI.
1. Extend the query-local replay selection context in `explain.go` to use the
coordinate description from Stage 7. Keep `Explanation.Path` and its effective
snapshot at the requested final address; read earlier matched values at the
entry address instead of the final numeric slot.
2. Apply source/CLI payloads to the existing physical scratch tree unchanged.
Use the entry coordinate for before/after snapshots, contribution selection,
baseline, and decoding checkpoints. For additions with no entry lineage,
report absence before resolution rather than another record's value.
3. Thread the same coordinate through `appendInheritanceExplanation` and its
helpers. Preserve inherited source representation, original locations,
consumed controls, chronological order, and the existing typed-decoding
transition. Do not create a second independently retained history model.
4. Retain snapshot-side path information so Stage 11 can mask values using the
coordinates from which they were actually read. Do not rebase sensitive
values and then mask them solely at their new index.
**Verification:** a record moved from index 0 to 1 shows its own earlier field
value, including selected overlay, inheritance, typed defaults, and CLI evidence
where applicable. Use focused representative fixtures rather than multiplying
every source form across every case. Collection queries keep original list order.
## Stage 9 — Explain net resolution and preserve removed evidence
**Status:** Complete. Focused history and explanation checks passed for moves, removals, additions, and reused positions.
**Scope:** resolution replay groups, structural changes, and reused addresses.
1. For matched-record queries, read a group's before side using the entry path
and after side using the final path. Apply the physical covering subtree once
to scratch; do not replay overlapping child assignments or guess callback
order. Preserve combined reasons/dependencies and explicit equal writes.
2. A pure move may have equal before/after record values but still includes the
recorded collection operation. A field edit plus move shows the matched old
value and correct final value, with the application operation retained.
3. For newly added records, begin their individual lineage with absent before
values. For identity changes, use removal/addition, not a rename transfer.
4. Implement the roadmap's removal example: `[reports, invoices]` becomes
`[invoices]`. `/resources/0` follows invoices; `/resources` retains reports'
removal, earlier values, and available attribution; absent `/resources/1`
remains explainable using the established historical-position rules.
5. Ensure collection-level selection returns the necessary removed definition
evidence, not just a generic parent normalization. Do not expose a removed
occupant as part of a surviving record's lineage. Preserve historical-path
enumeration of actual observed shapes without inventing projected positions
for values that never existed there. Surviving record prefixes take precedence
when a missing descendant is queried; wholly absent positions stay historical.
**Verification:** swap, deletion followed by compaction, insertion with shifted
survivors, identity replacement, removed field on a moved record, and queries of
reused versus absent positions. Assert metadata attribution and explanation
values agree, parent history retains removed evidence, and unknown paths remain
unknown. Use both whole-list-only and overlapping list/field records.
## Stage 10 — Classify matched and removed sensitivity evidence
**Status:** Complete. Focused sensitivity, secret, and dependency checks passed.
**Scope:** existing classification and dependency closure.
1. Extend history sensitivity candidates to include actual entry/final shapes
and mapped surviving evidence. Reuse schema tags, projected sensitive nodes,
predicates, and recorded dependencies; classify historical values even when
removed. Keep identity tuples and resolved credential bytes out of evidence.
2. Transfer sensitivity from matched entry descendants to final descendants
using the endpoint correspondence. Use the entry evidence as the source for
this projection, not an in-place loop that confuses indexes during swaps.
Preserve historical-coordinate masks as required for collection and removed
queries. Avoid modeling item matching as arbitrary transitive mutation edges.
3. Preserve supplied dependency paths and their existing directional semantics.
A dependency path does not follow later moves as a public identity selector.
Include dependency-derived sensitivity from retained matched evidence and
original resolution records, including children hidden by a replay group.
4. Keep typed secret lookup and final identity validation at their current
phases. Preserve source-version evidence classification at its original
coordinates. Do not introduce callbacks, credential reads, or new failure
modes while collecting correspondence sensitivity.
**Verification:** focused cases for sensitivity transferred during a swap,
removed evidence retained at collection level, and dependency-derived sensitivity
from records hidden by a replay group. Reuse existing dependency-closure tests.
Stage 11 verifies the resulting disclosure through the safe rendering boundary.
## Stage 11 — Mask paired snapshots and preserve safe disclosure
**Status:** Complete. Focused moved, removed, dynamic-tag, dependency, secret, and diff checks passed.
**Scope:** snapshot rendering and inspection integration.
1. Mask a moved explanation's before and after snapshots using their respective
coordinates and required historical/dependency closure. Reuse `snapshot.go`;
support paired query-local mask information if needed rather than creating
another renderer. Conservative historical masking remains acceptable under
the existing contract; do not weaken masking to make examples look narrower.
2. Preserve effective rendering, public diff masking from both results, source
version evidence redaction, and effective secret-reference disclosure rules.
A positional historical query and an identity-following surviving query must
both mask all sensitive values they actually render.
3. Check the same safe-snapshot operation for whole-collection before/after
values, including removed records. Container queries retain physical order
and their original source evidence; per-record queries use paired positions.
**Verification:** disposable canaries for sensitive moved fields, sensitive
removed records at collection level, dynamic sensitive tags, predicates, and
derived dependencies. Verify absence of canaries in safe inspection and failure
output. Include a dependency hidden by parent/child coalescing and a swap, so
masking cannot accidentally protect only the previous numeric position. Reuse
existing tests for ordinary dependency closure and credential non-retention.
## Stage 12 — Verify the complete feature through the public facade
**Status:** Complete. Public resolution, identity, diff, disclosure, and boundary checks passed.
**Scope:** representative integration and ownership regressions.
1. Add a focused public fixture, for example
`facade_resolution_sequences_test.go`, using real `Load`/`LoadLayered`, public
`Definition.SequenceIdentities`, resolution records/helpers, metadata, and
explanation. Reuse engine coverage for the detailed algorithm matrix.
2. Cover the motivating ordinary-list field edit, a registered reorder plus
normalization, and removal/position reuse with distinct source evidence.
Include one dynamic registration and one ordinary/layered equivalence case.
Check codes and semantic paths for uncovered structural changes, rather than
snapshotting entire diagnostic messages.
3. Verify fixed callback entry queries versus final identity-aware queries;
correct final values, explicitness, origins, history, and safe explanation;
and a public `Diff` that still reports the containing list atomically.
4. Mutate returned configuration and query records after loading and show that
frozen explanation and other loads are unaffected. Reuse existing callback
lifetime and concurrency tests; add only correspondence-specific ownership
coverage where those tests would miss an alias.
5. Confirm whole-list-recording consumers still work, YAML-only identities do
not gain final matching semantics, and final registration checks can still
validate or reject defaults/CLI/resolution output at the established boundary.
**Completion:** the feature is observable through the existing public API;
no exported type, selector, or callback lifecycle change is needed.
## Stage 13 — Document the implemented contract and validate the sprint
**Status:** Complete. Focused engine, facade, and consumer checks, `go test -race ./...`, and `./scripts/check.sh` passed with Go 1.27.0 on Linux.
**Scope:** canonical documentation and final integration checks.
1. Update `docs/config.md` resolution, layered metadata, historical explanation,
identity-registration, and private-comparison sections. Explain ordinary
positional comparison, eligible registered correspondence, atomic structural
coverage, final versus entry addresses, additions/removals, and reused-position
history. Keep public effective diff atomic. Include a short field-edit and
remove/compact example and link the ADR for rationale.
2. Update public comments in `lifecycle.go`, `metadata.go`, `inspection.go`, and
`sequence_identity.go` where their current descriptions need qualification.
Check the engine-facing counterparts as well. Preserve fixed `EntryInfo` and
`IsExplicit` semantics and avoid promising identity-addressed public paths.
3. Update only relevant architecture-policy provisions to recognize registered
identity correspondence during resolution inspection. Preserve composition,
final-only identity validation, public facade ownership, resource lifetimes,
and secret boundaries. Update `docs/internal/overview.md` for actual new
responsibilities and `docs/development.md` for the ADR and test owners.
Keep detailed current behavior in its canonical owner.
4. Update roadmap/plan completion status after reviewing the full target, without
deleting unrelated pending roadmaps. Do not prepare release notes or publish
a release as part of this sprint.
5. Format changed Go files and review whitespace. Run the checks below with the
installed compatible Go toolchain. These are development checks, not new
release gates; do not wait for CI.
```sh
go test ./internal/engine -run 'Resolution|History|Explain|Sequence|Collection|Secret|Sensitivity|Diff|Independent|Provenance'
go test . -run 'Resolution|SequenceIdentity|FacadeInspection|Diff|PublicFacadeBoundary|DependencyImportBoundary|LocalDocumentationLinks'
go test ./examples/consumers
go test -race ./...
./scripts/check.sh
```
Use narrower applicable commands during earlier stages. On failure, resolve the
actual defect or deliberately changed contract rather than weakening unrelated
assertions. Do not add traversal-count, benchmark-threshold, or configuration
snapshot tests. No new network or credential requirement belongs in the suite.
**Final acceptance review:** verify all roadmap examples, ordinary and registered
list rules, fallback without early rejection, complete field coverage, unchanged
helper/entry semantics, matched source/presence/history, added-record absence,
removed/reused-position evidence, safe moved/removed values, detached ownership,
existing history admission, and atomic public diff. A passing coverage audit
alone is insufficient. Review the final diff and commit the completed nonempty
work with a plain-English message, leaving the workspace clean and reporting
validation and any material limitations.

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# Sequence resolution implementation review
Reviewed on 2026-11-02 against the [feature roadmap](resolution-sequences.md),
[implementation plan](implementation.md), and
[ADR 0021](../adr/0021-sequence-resolution-correspondence.md).
Scope: commits `1cee127..b066090` plus the pre-existing working-tree changes,
including final documentation, an additional sensitivity regression, and the
sensitivity fixed-point loop in `internal/engine/secret.go`. The latter loop is
not present in `b066090`; Finding 3 specifically concerns the reviewed working
tree. Findings 1 and 2 also affect the committed implementation. Existing work
was preserved; this review changes no production code or tests.
The architecture now separates resolution comparison from the atomic comparator
used by public diff. A private entry-to-final correspondence for registered
collections feeds auditing, snapshots, metadata refresh, and shared history
selection/replay. All five findings below have now been addressed. Original
audit observations are retained for context; completion notes describe the fixes.
A follow-up integration and algorithm audit at `27be6ba`, including the same
pre-existing working-tree changes, added Findings 4 and 5. It preserved the
decided comparison, identity, ordering, and history policies. Findings 1–3 were
still open at that audit; Finding 3 covers the principal collection-size quadratic loop and
is not duplicated below.
## Finding 1 — Metadata history rejects a valid matched historical field
**Priority:** P2. **Status:** Complete.
Completion: metadata history now delegates correspondence-aware eligibility to
the shared selector. A regression verifies agreement with explanation for a
removed field absent from the previous final-slot occupant, while effective
lookup, unknown paths, and explicit key/index distinctions remain correct.
The regression failed before the fix; focused tests and `./scripts/check.sh`
passed after it.
**Code:** [engine metadata](../../internal/engine/metadata.go),
`Metadata.History` at lines 50–55; compare
[shared history selection](../../internal/engine/history_select.go),
`selectHistory` at lines 43–49.
`selectHistory` accepts a query whose matched entry coordinate has an observed
shape, even if its final coordinate never had that field. `Metadata.History`
still requires the requested coordinate itself to have been observed before
calling that selector. Consequently metadata history and explanation disagree
on a removed descendant of a moved record.
Reproduction using `Items []map[string]any`, with an application registration
of `id` at `/items`:
```yaml
items: [{id: a, extra: own}, {id: b}]
```
During resolution, delete `extra` from `a`, swap the records, and record a
normalization at `/items`. Query `/items/1/extra`, which follows surviving
record `a` back to entry position 0.
**Expected:** both inspection APIs retain `a`'s earlier field evidence and its
removal. Effective lookup remains absent. The roadmap and plan explicitly cover
removed descendants of surviving records through correspondence.
**Actual, verified through the public API:** `Explain` succeeds with two history
events, including a resolution transition from `own` to absence, while
`Metadata.History` returns an empty slice. The requested physical path did not
exist on either endpoint, although its matched entry path did.
**Remediation:** make metadata history use the shared selector's correspondence-
aware eligibility rather than its stronger preliminary shape check. Preserve
unknown-path and explicit key/index-shape handling. Add a focused regression
where the old occupant of the final position never had the removed field;
the existing removed-field test gives both original records that field and does
not expose this inconsistency. This requires no synthetic historical-path
enumeration or new public addressing mechanism.
## Finding 2 — Deep descendant history reports the old record's operation path
**Priority:** P2. **Status:** Complete.
Completion: pre-resolution operation paths now use the matched record-prefix
translation, preserving ancestor scope and suffixes. Resolution records already
in final coordinates are left unchanged. A regression covers deep inherited
fields, record/container queries, original source coordinates, and overlapping
final-position records. Focused history checks and `./scripts/check.sh` passed.
**Code:** [shared history selection](../../internal/engine/history_select.go),
`selectHistory`, especially the reported-path translation at lines 116–120.
Selection follows the correct entry record, but reported-path translation uses
the queried leaf and a depth heuristic rather than the matched record prefix.
An operation reported at an entry record or other ancestor more than one level
above the queried leaf can retain its old index. That `Change.Path` is neither
the final queried path nor its ancestor. This diverges from Stage 7's requirement
to project affected paths into the final coordinate while preserving original
source locations separately.
Verified reproduction with registered `id` identity:
```yaml
items:
- id: parent
nested: {more: {value: old}}
- id: child
extends: {id: parent}
```
Swap the records during resolution, record `/items`, then inspect
`Metadata.History(/items/0/nested/more/value)`. The child is now at position 0.
**Expected:** the inherited operation's reported path identifies the affected
region under final `/items/0`, or its actual common container ancestor; source
`Location` coordinates continue to describe the original input.
**Actual:** history contains a main-layer inherited operation reported at
`/items/1`, followed by the resolution operation at `/items`. The first reported
path now identifies the other record. Source/value matching alone does not
repair this public path inconsistency.
**Remediation:** translate reported paths using the actual entry/final item-prefix
pair, preserving the operation's relative suffix and ancestor scope. Distinguish
entry-coordinate source/inheritance paths from resolution records that already
use final coordinates, so the latter are not translated twice. Verify a deep
descendant of a moved inherited record, a containing operation, and an unchanged
common collection ancestor. Avoid substituting the queried leaf for every
operation path solely to satisfy an ancestor check.
## Finding 3 — Sensitivity propagation rescans the whole collection quadratically
**Priority:** P2. **Status:** Complete.
Completion: matching edges and real dependencies now share one indexed work
queue. Candidate coordinates are registered once, newly reached historical
coordinates are registered on demand, and each trigger fires at most once;
classification no longer rebuilds closure in full-map passes. Conservative
historical masking is retained. The existing earlier-matched-value regression
is retained in this fix, and a cyclic rotation regression covers removed fields
and dependency-derived values. Focused sensitivity tests and
`./scripts/check.sh` passed.
**Code:** [secret classification](../../internal/engine/secret.go),
`classifySecretPathsWithEvidence`, working-tree lines 83–122; associated
[correspondence translations](../../internal/engine/resolution_correspondence.go).
The working-tree fix repeatedly projects every currently sensitive path in both
directions through the permutation, merges those paths into the same positional
mask, and rebuilds dependency closure until no mask changes. Each pass scans all
candidate paths and reruns `closeSecretDependencies` from scratch.
For an `n`-record cyclic rotation with one initially sensitive field and no
dependency edges, the first pass reaches neighboring positions. Subsequent
passes treat those newly projected positions as fresh entry/final seeds and
advance around the cycle. There are Theta(n) passes over Theta(n) paths, giving
Theta(n²) work at fixed record width and depth. This does not require a dense
dependency graph or unusually deep configuration. The plan called for endpoint
projection from entry evidence and explicitly cautioned against treating item
matching as arbitrary transitive mutation edges.
A public-API probe with entry identities `[a, b, c, d]`, final identities
`[d, a, b, c]`, and only `/items/0/value` predicate-classified confirms that all
four final values become masked. Some masking at reused historical coordinates
is deliberately conservative; the issue is reusing projected positional masks
as further correspondence seeds and rescanning the complete population. This
finding does not introduce a promise to disclose more values or weaken the
existing historical sensitivity contract.
**Remediation:** retain the protection provided by the additional
`TestMovedDependencyProtectsEarlierMatchedValue` regression, including backward
protection of earlier matched values after dependency classification. Represent
entry/final sensitivity correspondence explicitly and process newly classified
states with indexed dependency/matching edges or another bounded worklist,
rather than rebuilding full closure on every projection pass. Keep original
historical-coordinate masks and required conservative redaction. Check cyclic
rotations and interactions with dependencies without performance thresholds or
tests of incidental traversal counts. Reverting to a single incomplete
projection pass would lose the dependency-history protection the working-tree
change was added to provide.
## Finding 4 — Correspondence lookup repeatedly serializes growing path prefixes
**Priority:** P2. **Status:** Complete.
Completion: eligible collection prefixes now use the existing prefix index.
Translation formats the requested pointer once, retains concrete path-kind
checks, and copies the resulting path independently. No-eligible cases return
positionally without formatting prefixes; no-registration loads skip matching
construction entirely. Cloning rebuilds an independently owned index. Existing
matching/history/ownership coverage and a numeric-key/escaped-key regression
passed, along with `./scripts/check.sh`.
**Code:** [correspondence translations](../../internal/engine/resolution_correspondence.go),
`entryPath` at lines 96–125 and `finalPath` at lines 129–156; consumers include
[metadata refresh](../../internal/engine/load_metadata.go), resolution record
validation/snapshots, shared history queries, diagnostic locations, and sensitivity.
Both translation methods search for a containing collection by constructing and
serializing successively longer prefixes of the requested path. For an unmatched
path with `d` constant-width segments, prefix serialization performs work
proportional to `0 + 1 + ... + (d-1)`, or Theta(d²), per lookup. Each nonempty
serialization also allocates a pointer string. The final owned path copy only
needs Theta(d) work. This prefix search is not an algorithm selected by the
roadmap or plan.
This also affects ordinary configurations with no registered collections:
`entryPath` still formats every prefix even when `collections` is empty.
`applyResolutionMetadata` calls it while seeding every final field and again
while refreshing explicitness. Thus a resolution callback introduces this cost
across ordinary metadata, not only when records actually move. On a chain of
depth `d`, the lookups at all levels contribute Theta(d³) prefix-serialization
work, compared with Theta(d²) for linear lookup at each level. Existing depth
limits bound the magnitude; this is an avoidable extra depth factor within those
limits, not a claim of unbounded supported input depth.
**Remediation:** return an owned positional path immediately when there is no
eligible correspondence. For registered scopes, use a segment-prefix index, or
serialize the requested pointer once and query the existing `pathPrefixIndex`
for matching ancestors. Retain concrete path-kind verification so numeric keys
and sequence indexes remain distinct, and preserve additions, removals, and
wholly absent historical-position behavior. Because registration selectors do
not pass through sequence indexes, the relevant matching record prefix does
not require an exhaustive scan of every collection. This can make translation
linear in encoded path length while retaining the current compact pair tables.
Also avoid the preparatory correspondence tree walk when the compiled
application policy contains no registrations. Verify behavioral equivalence
through existing translation, shape, history, and ownership tests rather than
adding timing thresholds or exact allocation assertions.
## Finding 5 — Delta sorting formats pointers inside every comparison
**Priority:** P3. **Status:** Complete.
Completion: both comparison operations share the existing decorated delta sort,
which constructs one pointer per delta and preserves canonical pointer ordering
and the kind tie-break. Existing comparison and diff coverage passed, along with
`./scripts/check.sh` and the final `go test -race ./...` run. No performance
thresholds, persistent cache, or new public contract were introduced.
**Code:** [resolution comparison](../../internal/engine/resolution_compare.go),
`compareResolutionValues` at lines 64–69; compare the existing decorated sort in
[shared structural comparison](../../internal/engine/document_compare.go),
`compareConfigurationValues`.
The new resolution comparator invokes `Path.String()` on both operands during
every sorting comparison. With `k` deltas, comparison sorting can invoke this
Theta(k log k) times. For pointer length `L`, that contributes Theta(k L log k)
serialization work and Theta(k log k) non-root pointer allocations in the worst
case. This is newly avoidable overhead; the existing shared comparator already
formats one pointer per delta before sorting.
**Remediation:** follow the existing decorate/sort/unwrap pattern: compute each
delta's pointer once, sort by the retained pointer and existing kind tie-break,
then return the original semantic paths. Pointer construction becomes Theta(k L)
with Theta(k) pointer allocations. Sorting still performs O(k log k) comparisons
with normal string-comparison costs; this does not claim a better worst-case
bound for string sorting itself. Keep canonical ordering as expressly selected
in the plan. Reuse ordering tests; no alternate sort policy, persistent cache,
benchmark gate, or API change is needed.
## Validation performed
- The current working tree passed `./scripts/check.sh` with Go 1.27.0 on Linux.
- `go test -race ./...` passed with the same toolchain.
- Separate disposable programs outside the repository reproduced Findings 1
and 2 through the public facade and confirmed the cyclic masking behavior
described in Finding 3. Its complexity follows from the implemented loop;
no timing benchmarks were collected.
- The review found no additional public API restrictions or earlier identity
validation requirements. Shared atomic diff comparison, callback entry views,
registered selector scope, and YAML-only identity lifetime remain preserved.
- The follow-up traced identity-table construction, resolution comparison,
coverage and snapshot handoffs, metadata refresh, history selection/replay,
and sensitivity propagation. Endpoint matching uses tuple lookup tables rather
than pairwise record searches. Existing whole-tree explanation replay and
canonical ordering were retained as planned choices, not reconsidered.
- Findings 4 and 5 follow directly from the loops, `Path.String` implementation,
and existing prefix-index/decorated-sort alternatives. No new tests or
benchmarks were needed; prior successful checks apply to the unchanged
production and test files. The amended document's links and whitespace were
checked separately.
## Remediation validation
All five issues were addressed sequentially in separate nonempty commits, each
with its completion note and relevant verification. Final validation passed
`./scripts/check.sh` and `go test -race ./...` with Go 1.27.0 on Linux. The
development check includes formatting, whitespace, tests, local documentation
links, vet, and build checks. No benchmark thresholds or release gates were added.
The directly related pending sensitivity regression was retained with Finding 3.
Unrelated pre-existing documentation and public-comment changes were preserved
outside the remediation commits.

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# Field-level resolution and identity-aware sequence history
Status: implemented. This roadmap records field-level
resolution auditing and identity-aware inspection of registered collections.
The [implementation plan](implementation.md) owns execution order and verification.
## Purpose
Allow applications to normalize or derive individual fields inside lists and
record those fields directly. Preserve the requirement that every net change
made during resolution has an exact or ancestor record, together with coherent
final values, provenance, history, and sensitivity metadata.
For a collection with an applicable application registration, the declared key
defines a record across positions. Use that correspondence in auditing and
inspection. For ordinary lists, position is the only available correspondence;
compare positions as addresses without inferring which application object an
element represents.
## Prior baseline
At the planning baseline, the resolution contract audited the typed configuration
before and after `Definition.Resolve`. Mappings were compared recursively, while
the private structural comparator reported any list change at the whole-list
path. A field-level record inside a changed list therefore failed to cover that
list-level delta. Recording the whole list worked.
For example, changing `/resources/0/path` and recording only that path previously
produced an unrecorded-change diagnostic at `/resources`. That was established
behavior rather than a new regression associated with v1.0.0.
The comparator also serves other inspection and metadata operations. Making
resolution auditing more precise must account for those callers rather than
silently changing the public diff contract.
The prior resolution implementation captured before and after values at the
same numeric path and refreshed metadata at that path. Following a registered
record through a move requires the matching entry and final record evidence.
Application registrations already define identities for collections and constrain
their final values. YAML-only declarations have a shorter lifetime. The
[identity contract](../config.md#application-registrations-and-identity-details)
and [ADR 0017](../adr/0017-collection-sequence-policy.md) own those distinctions.
## Target behavior
### Mappings and ordinary lists
Mapping comparison remains recursive. For lists without applicable application
identity registrations:
- If the lists have equal lengths, compare corresponding positions recursively.
A position is an address, not an assertion of element identity.
- If the length changes, report a structural change at the list path, requiring
a record for that list or an ancestor.
- For equal-length lists, a reorder manifests as changes at the affected
positions. Every detected change needs coverage; a whole-list record remains
a convenient way to cover the operation.
Apply these rules recursively to nested values. Preserve existing treatment of
additions, removals, null, scalar differences, and changes of value kind except
where finer sequence comparison deliberately changes the reported path.
Ordinary-list inspection remains positional; similar field values do not justify
moving provenance or history between positions.
### Lists with registered identity
Use applicable `Definition.SequenceIdentities` registrations to match records
between the entry and final snapshots. Reuse existing identity-field selection,
compound-identity, scalar-equality, and duplicate-detection semantics. Do not infer
an identity from a field merely named `name` or `id`.
| Observed change | Proposed auditing behavior |
| --- | --- |
| An ordinary field changes on a matched record | Compare recursively and allow a record covering that field. |
| Identity order changes | Report a structural change at the list path; require a list or ancestor record. |
| An identity is added or removed | Report a structural change at the list path; require a list or ancestor record. |
| An identity changes | Treat it as removal and addition, without inferring a rename. |
Compare matched records by identity even when their numeric positions differ.
Structural changes still require whole-list coverage. A field record by itself
does not cover an accompanying reorder or membership change.
Identity matching serves both audit coverage and inspection. Although a
whole-list record covers every edit in a moved collection, matching still
identifies which record's earlier values and source evidence belong to each
final record. Stopping at a whole-list delta is insufficient for that purpose.
Match only the resolution-entry and final snapshots. Identity changes are
removal and addition; temporary identities, intermediate moves, and the order of
callback mutations are not reconstructed. Matching does not introduce a new
collection merge operation or change whole-record `upsert`.
Use the existing registration selectors and scope. They traverse mapping keys,
not sequence indexes; recursive comparison of nested lists does not expand the
registration API. YAML-only declarations do not acquire a new final-resolution
guarantee or become identity selectors for this work.
### Matching eligibility
Use identity matching when both snapshots provide valid, unique identities under
the applicable registration. Otherwise use conservative whole-list auditing for
a changed collection, without inventing correspondence. An unchanged collection
does not require a resolution record merely because matching is unavailable.
Preserve existing final identity validation. Resolution may repair invalid entry
values; this feature does not reject them earlier or require valid identities
throughout the callback. When matching is unavailable, the recorded container
operation describes the change without claiming that individual records survived.
### Example
Assume the application registers `name` as the identity for `resources`:
```yaml
resources:
- name: reports
path: ./reports
- name: invoices
path: ./invoices
```
Changing the first path to `/srv/reports` can be covered by a normalization record
at `/resources/0/path`. The unchanged `invoices` record requires no record.
If resolution also swaps the records, the final collection is:
```yaml
resources:
- name: invoices
path: ./invoices
- name: reports
path: /srv/reports
```
Recording only `/resources/1/path` does not cover the reorder. Recording
`/resources` covers that structural operation and any field edits within the
list. A field record can additionally explain the path normalization.
Inspection at the final `reports` position includes that record's earlier
evidence from position 0, with its original source coordinates, and the recorded
collection operation explaining the move. Its previous path is `./reports`,
not the `./invoices` value that previously occupied position 1. The `invoices`
record moved without a field change. An ordinary unregistered list instead
describes changes at positions 0 and 1, without identifying records across them.
### Recording, inspection, and ownership
Resolution records and helper targets for surviving values describe final
positions. Preserve the existing ability to record removed values.
`Resolution.EntryInfo` and `Resolution.IsExplicit` retain their existing fixed
entry-snapshot meaning. Numeric paths and helper targets are not automatically
rebound to an identity when the application later moves an element. A helper
assignment must still agree with the final value at its declared target.
Identity establishes correspondence internally; this feature adds no public
identity-addressed path or mutation-tracking API. An application that restructures
a list can record its container rather than maintain individual helper targets
through moves.
Preserve helper-value consistency checks, reason and dependency recording,
presence distinctions, detached query results, and independent-load ownership.
Fine-grained accepted changes must appear consistently in the returned values,
metadata, history, explanation, and sensitivity propagation. For eligible
registered collections, use the same entry-to-final correspondence for before
values, source attribution, input explicitness, and sensitivity. Do not attach
the previous occupant's evidence to a different record merely because it now
occupies that index. Identity matching alone does not make a newly added record
explicit input or give it an invented source.
A history query at a final record's position includes the matched record's
earlier evidence from its entry position. Preserve original source coordinates
and include the recorded collection operation explaining the move. Recorded
normalization and derivation retain their resolution origins; following prior
evidence does not erase the application operation. Removed evidence remains
available as described below.
Explicit structural records remain the explanation of application-owned list
restructuring. Dependency paths retain their existing recording semantics;
identity matching does not turn supplied paths into selectors that follow later
mutations. Check sensitivity propagation through both the matched evidence and
recorded dependencies, including moves and removed values. The proposal does not
reconstruct the callback's intermediate mutations.
Public effective-configuration diff output remains atomic for lists. Resolution
comparison may need a dedicated internal operation or comparison mode so that
its new behavior does not alter unrelated callers.
### Removed records and reused positions
For eligible registered collections, inspection distinguishes a surviving
record's lineage from evidence of records removed during resolution:
- Queries at surviving positions describe the surviving record's lineage,
including its matched entry evidence and the recorded collection operation.
A removed record that previously occupied that position does not become part
of the survivor's individual history.
- Collection-level history and explanation retain the removal and the removed
record's evidence, including available source attribution and before values.
- Historical positions that no longer exist remain inspectable under the
existing historical-path rules. Their availability does not give a reused
position a second, identity-addressed meaning.
For example, if `[reports, invoices]` becomes `[invoices]`, a query at
`/resources/0` follows `invoices` back to its entry position 1. The removal of
`reports` and its earlier evidence remain inspectable at `/resources`, rather
than being mixed into the individual history of `invoices`. The now-absent
position `/resources/1` remains available under the historical-path contract.
Original source coordinates are preserved, and existing sensitivity rules apply
to all retained evidence.
## Work needed from the baseline
- Trace resolution comparison, record coverage, helper verification, metadata
updates, history replay, and sensitivity handling to identify where each needs
finer sequence changes or explicit before/after correspondence.
- Add positional recursive comparison for ordinary equal-length lists and
identity-aware comparison for eligible registered lists, while retaining
structural coverage for the cases above.
- Reuse collection identity machinery and validate matching eligibility without
strengthening the existing final-only registration guarantee.
- Carry matched entry and final positions into resolution snapshots, metadata,
history, and sensitivity handling through the existing shared history model.
A coverage-only implementation does not complete this feature. Preserve
source coordinates and distinguish a record's lineage from the prior occupant
of its final position.
- Verify field edits, nested lists, zero/false/null values, multiple simultaneous
changes, length changes, reorders, identity changes, helper targets, and
metadata behavior across the public loading boundary. Include cases in which
a field record must not conceal another unrecorded change.
- Exercise moved records with distinct source evidence, explicitness, and
sensitivity; combined reorders and field edits; removed values; repaired entry
identities; and dynamic registration selectors. Check agreement between final
metadata and explanation while retaining entry-query behavior and atomic public
diff output. Verify the removal-and-position-reuse example above: surviving
record queries follow their own lineage, collection queries retain removed
evidence, and absent historical positions remain inspectable.
- Update the resolution contract and relevant API comments when implemented.
Review ADR and policy follow-up for registered identity as the correspondence
used during resolution inspection, as well as the distinction between
resolution comparison and public diff presentation. Preserve accepted ADR
decision bodies.
Use identity lookup tables for expected linear matching work in collection size,
plus recursive value-comparison work. Preserve deterministic output and existing
equality semantics; avoid pairwise searches for matching records. This is a
design objective, not a new public performance guarantee.
No configuration syntax, dependency, release gate, or new mutation-history system
is proposed. Existing callbacks that record a whole list should continue to work.
The matching-eligibility, final-position-addressing, and removed-record inspection
decisions are settled and integrated above.