Record ConfigKit adoption scope and deferred inspection work

docs/roadmap/deferred.md

@@ -25,6 +25,50 @@ unselected extensions to the delivered ConfigKit comparison. Consider them only
 for a concrete consumer need and a deliberate API/behavior decision under the
 relevant ADRs.
 
+### Configuration inspection extensions
+
+The [ConfigKit v1.1.0 adoption review](configkit-v1.1.0.md#recommended-scope-decisions)
+recommends the following work after dependency and source-report adoption.
+Metadata inspection is the recommended next functional sprint; the other
+features have no selected sequence or delivery date. These proposals do not
+establish command grammar, report schemas, or new provider requirements.
+ConfigKit's public APIs own the evidence and its semantics.
+
+- **Optional field metadata, path discovery, and history (OD-3).** Expose native
+  `Metadata.Lookup`, `IsExplicit`, `HistoricalPaths`, and `History` through an
+  optional provider capability. Design field and history reports together,
+  keeping existing providers usable. Distinguish effective paths from removed
+  historical paths: a failed `Lookup` must not suppress available `History`.
+  Validate that distinction and faithful projection of returned field/change
+  records without recreating upstream provenance logic. Historical enumeration
+  is not an exhaustive inventory of possible schema fields. This gives the
+  earlier field-origin inventory proposal a concrete, upstream-backed scope;
+  command names, selectors, and report shapes remain to be designed.
+- **Failed-load source inventory (OD-4).** Present acquired source evidence from
+  `LoadError.Sources()` while retaining the failed outcome and diagnostics.
+  Design how an adapter returns its source facet on error and how result output
+  precedes terminal failure presentation. Cover acquisition and report-delivery
+  failures together; current diagnostic context remains available meanwhile.
+- **Detailed comparison (OD-5).** Consider an additional form projecting native
+  `Difference` paths, both snapshots, presence/redaction fields, and
+  `HiddenChanged`. The adoption sprint retains the reduced
+  additions/changes/deletions report. Decide later whether a detailed form
+  complements it or replaces it through a deliberate compatibility change.
+- **Structured diagnostics (OD-6).** Consider machine-readable native codes,
+  paths, severities, and locations alongside CommandKit's shared reporting
+  design. Define result/diagnostic channels, warning and terminal-failure
+  interaction, and delivery outcomes. A ckconfig-specific report remains an
+  alternative, with its cross-family alignment considered explicitly.
+- **Source-ID filtering.** Consider selecting a record already available in the
+  source inventory. Native `Source(id)` lookup is a convenience; this proposal
+  need not introduce another command or require a lookup method from every
+  custom source provider.
+
+Discovery, import defaults, collection identities, and field-level resolution
+recording remain available through application loaders. Standard inspection of
+resource contexts or secrets-directory bootstrap has no immediate proposal;
+those capabilities primarily serve application loading and startup.
+
 ### Alias completion and discovery
 
 The delivered [shell completion feature](../cli.md#shell-completion) provides
@@ -47,8 +91,9 @@ operator or consumer need and an appropriate ownership/behavior decision:
 - JSON reports and output-file management or reloadable export.
 - Shell completion extensions, including alias discovery described above and
   dynamic discovery of configured or remote values.
-- Configuration mutation, generic value assignment, and exhaustive field-origin
-  inventories.
+- Configuration mutation and generic value assignment. Field metadata and
+  provenance inspection are scoped under
+  [configuration inspection extensions](#configuration-inspection-extensions).
 - Credential diagnostics beyond PromptKit's native smoke checks and additional
   live provider probes.
 - Additional component identity registration and domain artifact catalogs.