# Shared report output, PromptKit v0.19.0 adoption, and ConfigKit operator CLI

Status: proposed roadmap for review. Scope is agreed in principle; implementation
has not started. Command spellings, report designs, and API changes below are
recommendations except where explicitly recorded as agreed below. Accepted
report formats are an initial implementation target; practical beta feedback
will guide later refinements rather than requiring exhaustive layout design now.

## Purpose and ownership

Adopt released PromptKit v0.19.0 and expose useful operator tasks through
standard CommandKit commands, flags, and reports. This roadmap covers CLI
exposure, including ConfigKit v1.1.0 operator features in `ckconfig`, with a new
public core reporting capability as a prerequisite to the downstream work.
Core standardizes report format selection, representation, rendering, and
delivery for core commands, integrations, and application-owned commands.
Applications and integrations continue to choose report content. This does not
turn `ckprompt` into a convenience library for application-internal PromptKit
operations. Applications continue to own engine construction, domain inputs,
credentials, execution, and their executable lifecycle.

The [architecture policy](../policy/architecture.md),
[optional-module decision](../adr/0010-optional-integration-modules.md), and
[reporting decision](../adr/0014-invocation-reporting.md) govern implementation.
The [CLI reference](../cli.md) and public GoDoc remain the owners of implemented
contracts. This roadmap selects work for review, not new guarantees about
upstream behavior or permanent limits on future features.

## Baseline and released evidence

Repository baseline: `0b4e47c4206e323f7c5d5ec3f357494dd23008b2`.
The completed v0.18.0 adoption is not reopened.

| Component | Current baseline | Target |
| --- | --- | --- |
| Core | `go.maximumdirect.net/commandkit`; Go 1.26.0 minimum | Public report output API with universal format choices and automatic selection; text/YAML/JSON land together as a prerequisite. Flag collections and scoped aliases still use existing core APIs. |
| `ckconfig` | ConfigKit v1.1.0; Go 1.27.0; core v0.3.0 | Adopt the new core reporting API, shared CLI inspection extensions, and an appropriate module release. |
| `ckprompt` | PromptKit v0.18.0; ConfigKit v1.1.0; ckconfig/core v0.3.0; Go 1.27.0 | Adopt the new core reporting API, PromptKit v0.19.0, and the ckconfig version delivering the shared work. |
| Candidate | [ckprompt v0.3.0](../../integrations/ckprompt/docs/releases/v0.3.0.md), recorded as unpublished | Update the unpublished candidate after checking its status during implementation. |
| Local workspace | Core and both integrations, Go 1.27.0 | Validate local composition and independent modules separately. |

Use PromptKit tag `v0.19.0`, commit
`4f3212bfb6c1f37f43d50715c2cedc1d43203064`. Its Go minimum remains
1.27.0 and its ConfigKit dependency remains v1.1.0. Reviewed sources are the
[release notes](https://forge.maximumdirect.net/base-layer/promptkit/src/commit/4f3212bfb6c1f37f43d50715c2cedc1d43203064/docs/releases/v0.19.0.md),
[request and report types](https://forge.maximumdirect.net/base-layer/promptkit/src/commit/4f3212bfb6c1f37f43d50715c2cedc1d43203064/types.go),
[engine API](https://forge.maximumdirect.net/base-layer/promptkit/src/commit/4f3212bfb6c1f37f43d50715c2cedc1d43203064/engine.go),
[namespace API](https://forge.maximumdirect.net/base-layer/promptkit/src/commit/4f3212bfb6c1f37f43d50715c2cedc1d43203064/namespaces.go),
[configuration inspection API](https://forge.maximumdirect.net/base-layer/promptkit/src/commit/4f3212bfb6c1f37f43d50715c2cedc1d43203064/configuration_inspection.go),
and [smoke API](https://forge.maximumdirect.net/base-layer/promptkit/src/commit/4f3212bfb6c1f37f43d50715c2cedc1d43203064/smoke_diagnostics.go).
Work against released versions only; do not inspect or monitor unreleased
upstream work in anticipation of another adoption.

ConfigKit v1.1.0 is already adopted at released commit
`191015e289d7f2b91abb9fdd9c4f2f5cf75b4de9`. Its
[inspection API](https://forge.maximumdirect.net/base-layer/configkit/src/commit/191015e289d7f2b91abb9fdd9c4f2f5cf75b4de9/inspection.go),
[metadata API](https://forge.maximumdirect.net/base-layer/configkit/src/commit/191015e289d7f2b91abb9fdd9c4f2f5cf75b4de9/metadata.go),
and [configuration reference](https://forge.maximumdirect.net/base-layer/configkit/src/commit/191015e289d7f2b91abb9fdd9c4f2f5cf75b4de9/docs/config.md)
support the additional CLI work below without an upstream dependency upgrade.
Its matched history for registered records moving within lists flows through
native inspection; it does not introduce identity-based CLI paths or
element-level effective diffs.

Current `ckprompt` supplies prompt/profile inspection, requirements discovery,
concrete request validation, prompt/profile/backend/namespace/collection
catalogs, and four smoke operations plus `test all`. Smoke commands already
expose most execution overrides and detailed native evidence. Validation has
profile, session, variable, and file-input flags but lacks that override surface.
There is no concrete request preview or dedicated backend detail command.

Current `ckconfig` supplies validation, native effective YAML, source inventory,
path explanation with history, and reduced semantic comparison. Its `View`
contains effective, sources, and explanation facets. Native metadata is not
exposed as a capability. `config sources` returns on acquisition failure before
rendering evidence; loaders convert native diagnostics into presentation
messages but do not expose a structured diagnostics report. Relevant boundaries
are [ckconfig contracts](../../integrations/ckconfig/contracts.go),
[ConfigKit adapters](../../integrations/ckconfig/configkit_adapter.go), and
[PromptKit adapters](../../integrations/ckprompt/adapters.go).

Effective display currently writes the whole configuration. Sources are reported
as a complete inventory. Comparison accepts independent config/overlay choices,
but applies the same application selectors to both typed inputs and succeeds
when a comparison reports differences. The new tasks extend those boundaries;
they do not replace already-delivered explanation or smoke functionality.

## Targeted end state

First establish the [shared core report output capability](#shared-core-report-output-prerequisite).
The integration work below uses that public API instead of adding independent
format-selection and encoding machinery in each module.

The original adoption tasks remain included:

1. Update the dependency, checksums, attribution, and unpublished candidate note.
2. Document all three upstream compatibility changes and correct credential
   inspection wording.
3. Cover the new authentication reason and corrected smoke preparation-error
   propagation at CommandKit's boundary.
4. Validate the final independent modules and aligned workspace.

Add the following operator capabilities. Syntax is illustrative unless selected
in the decisions at the end of this document.

| Operator task | Proposed CLI | Owning module and report |
| --- | --- | --- |
| Inspect what a concrete prompt request prepares | `promptkit show prepared PROMPT_ID --profile … --input-file … --var …` | `ckprompt`: YAML report of selected IDs, effective settings, rendered/appended messages, output contract and schema, session, hashes, and timing from `PreparedRun`. |
| Supply a short sample to one prompt without creating a file | `promptkit show prepared PROMPT_ID --input NAME=TEXT`; also request validation | `ckprompt`: native inline input for single-prompt preparation; file input remains available through `--input-file NAME=PATH`. |
| Reproduce target/provider settings without editing configuration | Applicable existing smoke override flags on validation and preview; `--llm-extra-params JSON` on these and smoke operations | `ckprompt`: native request forwarding; preview and smoke reports show returned effective settings. |
| Resolve unqualified resource selections in chosen namespaces | Independent prompt/profile/backend namespace flags | `ckprompt`: delegate to native namespace views, retaining the distinction from catalog filters. |
| Find configuration paths and inspect their explicitness | `config explain --list --scope promptkit`, with historical selection; metadata alongside path explanation | `ckconfig`, wired through `ckprompt.ConfigScope`: observed paths, effective presence, explicitness/null/origin evidence, and available history. |
| Understand both sides of configuration changes | `config diff --scope promptkit --details` | `ckconfig`: native paths, left/right snapshots, presence/redaction, and hidden-change evidence. |
| Investigate a failed configuration load | `config sources --scope promptkit` on failure; `config validate --details --scope promptkit` | `ckconfig`, with both native adapters: acquired source inventory and native codes, severities, paths, and locations while retaining the load failure. |
| Inspect one effective value or subtree | `config show --scope app --path /server` | `ckconfig`: the selected native effective snapshot, retaining redaction and absence/null distinctions. |
| Follow a source reference | `config sources --source-id ID` | `ckconfig`: the matching acquired source record, including evidence available after failure. |
| Compare different application selections | For example, `config diff --campaign spring --against-campaign autumn` | `ckconfig`: independently prepared typed inputs passed to the existing native comparison provider. |
| Detect configuration differences in scripts | `config diff --check` | `ckconfig`: a deliberate difference outcome based on native records, alongside the selected comparison report. |
| Narrow an inspection to relevant evidence | Subtree/explicitness filters on explanation discovery; severity/code filters on validation diagnostics | `ckconfig`: filtered native evidence with source references retained. |

The configuration suite retains six subcommands: `scopes`, `validate`, `show`,
`sources`, `explain`, and `diff`. Path discovery belongs within `config explain`;
structured diagnostics belong within `config validate`. This command placement
is agreed. OD-4 selects `--list` and `--path` as the explanation modes, with
help on a bare invocation. OD-6 selects `config validate --details` for detailed
diagnostics while retaining concise validation by default. Initial report
presentation and filter spellings are selected under OD-4, OD-6, and OD-8; exact
Go projections can be refined during implementation. No separate path inventory
or diagnostics subcommand is planned.

Transient configuration overrides are included under OD-11 as an opt-in loader
capability. `config validate --set /workers=0` and
`config show --set /server/port=8080` apply temporary overrides during acquisition
without editing source files. Numeric conversion, unusual pointer keys, loader
composition, and comparison-side grammar remain to be finalized.

### Compatibility and native semantics

Document these v0.19.0 changes for consumers constructing engines and inputs:

- Successful custom `ArtifactReader.Read` transfers ownership of its returned
  artifact and mutable body storage. Readers retaining scratch storage must
  supply independent returned storage and stop mutating returned aliases.
- `ProfileSource` and `BackendSource` provider maps now use ConfigKit's native
  recursive Mapping forms: built-in scalar values, `[]any`, and
  `map[string]any`. Explain explicit conversion of `json.Number` and typed
  containers. Runtime execution overrides have a separate accepted-value
  contract; do not impose configuration-source restrictions on their flags.
- Local-validation and structured-output schemas must be self-contained.
  External resources and filename-dependent base references fail preparation;
  internal references or explicit schema IDs supply the supported route.

No configuration-format migration is required from v0.18.0. Correct the CLI
description of `api_key_required`: it indicates a usable direct or environment
credential requirement and can coexist with `api_key_env`. Neither field is
evidence of current credential availability.

The new authentication response-limit reason is factual evidence with unknown
credential acceptance. Continue forwarding native findings without converting
false, unknown, unsupported, or incomplete observations into command failures.
Actual preparation/operation errors retain the operational outcome and supported
cause identity. Native errors and their categories remain upstream-owned.

### Preview and request flags

Expose preview as `promptkit show prepared PROMPT_ID`, using core's automatic
selection and universal format choices, through an independently available
capability alongside existing suite callbacks. The native adapter calls
`Engine.Prepare` and projects its returned snapshot; a preliminary
`ValidateRequest` call is unnecessary. Use existing typed selection, acquisition
diagnostics, and invocation reporting patterns.
Exact callback names and signatures follow the selected CLI design.

Preview performs applicable resource I/O and rendering but no model call.
Rendered and appended messages contain application content. Upstream excludes
resolved credentials from prepared settings; that does not make the whole
snapshot a redacted configuration report or a transferable execution handle.
Expose the upstream snapshot evidence without implying later execution uses
that exact snapshot or will succeed.

Provide public, reusable typed execution-flag collections in `ckprompt`, defined
once and used by smoke, validation, preview, and application-owned commands.
The collections standardize flag names, help, parsing, completion hints,
supplied-value tracking, and binding into native PromptKit request fields.
Applications retain their own input structs, request construction, engine
acquisition, execution, and outcomes. Reusing CLI declarations is within
CommandKit's ownership boundary; it does not introduce runtime convenience APIs.

Use the existing core `CommandSpec[I].Flags`, typed flag constructors, and
`Supplied[T]`. A generic collection factory can accept destination accessors
and return ordinary `[]commandkit.Flag[I]`. Direct binding is sufficient for
ordinary use; existing [CaptureFlags and FlagValues.ApplyTo](../../flag_values.go)
support deferred application or multiple destinations where needed. These flag
collections require no core change or new core collection abstraction. Exact
exported names and accessor signatures remain implementation design choices.

Keep execution-target overrides and the request-level transient retry field
distinct even when one convenient collection includes both. Preserve omission
instead of imposing shared defaults: ordinary execution and smoke diagnostics
have different native retry defaults. Preserve native explicit zero/empty
values and whole-map replacement semantics. Support deliberate subsets for
actual command needs while retaining common flag names and meanings, using a
proportionate composition API. Keep parsing in CommandKit and domain validity
in PromptKit. Existing application builders remain authoritative as agreed in
OD-2. That decision also selects literal-text and file input bindings and defers
output-contract overrides and appended-message controls.

### Namespace selection

Design independent prompt, profile, and backend defaults together. Native
`WithNamespaces` replaces all defaults on its new view; it has no partial-update
semantics. Under the agreed OD-3 design, opt-in selectors combine explicitly
declared suite defaults with supplied overrides; they do not infer defaults
from a loader's engine view.

Qualified IDs pass through native selection unchanged. Captured references,
configuration inspection, and namespace/collection inventories retain their
native meanings. Existing `--namespace`/`--all-namespaces` catalog filters
continue to describe filtering. Install new selectors only on operations where
they have a defined use; define that applicability table during implementation.

### Shared configuration capabilities

Extend `ckconfig` through optional capabilities so existing custom providers can
keep their currently declared operations. Both `FromConfigKit` and
`ckprompt.ConfigScope` should expose available native evidence. Do not require
all providers to implement every new inspection mode. Providers lacking metadata
or structured diagnostics retain their existing explanation/validation behavior;
mode availability and help must reflect the capabilities supplied.

For metadata, use `Metadata.HistoricalPaths`, `Lookup`, `IsExplicit`, and
`History`. Enumeration covers observed paths, not all possible schema fields.
Do not discard history because effective lookup fails. Existing explanation
already reports current/historical values; add the missing discovery and
explicitness within explanation discovery instead of reproducing upstream
provenance logic. Preserve native list-index paths; do not silently reinterpret
them as resource IDs.

For optional detailed comparison, project the native `Difference` records
already returned by `Scope.Compare`; retain the existing concise report by
default. Keep snapshots and their presence/redaction fields together, including
`HiddenChanged` when the safe values look equal. Reuse the same loading and
comparison path for both presentations. Native sequence comparisons remain
atomic; this work does not add element-level resource matching or a reloadable
patch format.

For failure investigation, retain `LoadError.Sources()` and `Diagnostics()` as
evidence alongside the error. The current adapters and `config sources` failure
path need changes, not just another renderer. Define an acquisition shape that
distinguishes unavailable evidence from an available empty inventory. A failed
load does not establish an effective configuration or metadata capability.

Render available evidence through normal invocation reporting before terminal
failure presentation. Keep the original load error and supported identity;
successful report delivery must not convert failure to success. Preserve
render/write failures separately through the current outcome machinery. Cover
cancellation with partial evidence explicitly without promising interruption of
an arbitrary writer or rollback of already-delivered bytes. OD-6 selects
`config validate --details`; its interaction with ordinary diagnostic messages
remains a presentation design task.
Structured records describe that validation invocation, including a failed
load; they are not a retrieval interface for an earlier command. Preserve the
current aggregate validation stopping behavior unless deliberately revised;
structured reporting alone does not promise exhaustive findings across scopes.

### Additional ConfigKit operator workflows

**Focused effective display.** Use the effective snapshot from native
`Explain(path)` for path-selected display. The ordinary whole-document path
continues to use `WriteEffective`. A historical-only path can be explainable
while lacking an effective value; distinguish that case from a present YAML
null. Select the missing-value behavior, provider availability, and aggregate
scope applicability under OD-8. Do not read mutable `Result.Config` or source
files to reconstruct inspection values.

**Source selection and report filters.** Select source IDs from the acquired
inventory, preserving existing record fields and upstream ordering. Native
`Source(id)` is a convenience, not an additional provider requirement. IDs are
local to a load and do not guarantee the same source in a later acquisition.
Apply subtree filtering to parsed configuration paths, not raw string prefixes
that would confuse `/server` with `/server2`. Specify explicitness filtering for
historical-only paths without treating unavailable effective metadata as false.
Diagnostic filters affect the presented records, not the underlying acquisition
outcome; retain the source references needed to interpret selected records.

**Independent comparison selections.** Extend the per-side typed-input design
in [ADR 0012](../adr/0012-typed-configuration-comparison-pairs.md). Capture
applicable selector bindings for each side, prepare and check both inputs before
comparison, and preserve the existing shared invocation state. Resolve omitted
right selectors, explicit empty values, repeated selectors, and flag-name
collisions under OD-9. Domain interpretation and loader caching remain with the
application; the comparison provider still receives two selections.

**Comparison assertions.** Base a difference outcome on native record presence,
including hidden changes whose redacted snapshots look equal. Equal effective
values can have different histories or explicitness. Comparison also does not
detect changed credential bytes behind an unchanged secret reference. Use
the agreed opt-in outcome and report-delivery behavior under OD-10; retain the
current ordinary diff outcome. A load or comparison failure is not evidence of equality.

**Transient overrides.** As agreed in OD-11, parse explicitly supplied
CLI values into native `Override` records and pass them through a declared loader
capability. ConfigKit owns override path validity, supported values, precedence,
decoding, resolution, provenance, and validation. Its configuration overrides
recursively overlay mappings and replace sequences; this differs from the
PromptKit execution override's complete provider-map replacement. Do not reuse
one grammar implementation in a way that erases that distinction. Source-load
errors remain errors even if an override would replace the affected value.

## Shared core report output prerequisite

**Agreed scope:** add a first-class public reporting capability to CommandKit
core before implementing the downstream integration additions. An application
or integration gathers report data and hands it to core; core selects the
default or operator-requested format, renders the report, and delivers it.
Centralize formatting and translation machinery to the greatest practical
extent so commands share output conventions and avoid repeated infrastructure.
Core remains independent of ConfigKit and PromptKit types and domain semantics.

Deliver plain text, YAML, and JSON together in the same core feature release,
implemented in separate reviewable units as useful. Exercise all three before
downstream integration additions depend on the API, so representation decisions
are validated across formats. XML is removed from current consideration.
Markdown is not selected for this adoption. New core formats must work with
existing commands without handler refactoring or
per-command encoder registration. This supersedes both the optional YAML-helper
proposal and earlier YAML-only report restrictions. Keep implementation
proportionate; exact public names, signatures, and internal representation remain
design work.

### Agreed universal and automatic format selection

Core owns the universal `--format` flag, its available options, help, input
validation, and renderer selection. Commands do not maintain format allowlists;
adding a renderer and format option in core makes it available to existing
commands automatically. An unknown format is a usage error before acquisition
or other command work. Use one format flag rather than separate format flags.

The initial public API does not offer command-specific format defaults. Resolve
the effective format in this order:

1. The operator's explicit `--format` choice.
2. Text when the report handoff includes a text template.
3. Core's automatic selection from the shared report representation below.

| Report content, without a text template | Automatic format |
| --- | --- |
| String | Text |
| Nonempty sequence containing only strings | Text, one item per line |
| Number or boolean | Text |
| Mapping, including an empty mapping | YAML |
| Sequence of mappings, nested sequences, or mixed values | YAML |
| Empty sequence or null | YAML, keeping the empty result visible |

Inspect the logical report representation after the selected serialization and
adaptation rules, not just the original Go type. A struct normally represents a
mapping, while a custom serializer may represent that value as a string. Use the
outer shape; do not search inside mappings for a presumed primary field. Select
once for the complete logical report, not independently for each item in a
result collection.

Omitting `--format` means "CommandKit chooses," not a fixed text default. The
choice can vary with the result: a populated string list yields text, while an
empty list yields YAML `[]`. Explicit selection provides a predictable format
when needed, including `config show --format yaml` for a configuration document
even when the selected value is a string. Core can deliberately evolve its
automatic policy in a future release.

This supersedes optional command defaults and the proposed per-command default
inventory, including explicit YAML defaults for `config show`, `config diff`,
and prepared-request preview. Applications choose report content and optional
text templates; core selects the format. Reconsider command overrides only for
a concrete demonstrated requirement.

For `config show`, hand off the selected logical configuration value, not a
string containing serialized YAML or a snapshot metadata wrapper. With no text
template, a configuration mapping naturally selects YAML and a selected string
value selects text. Native snapshot adaptation must preserve that distinction.

### Agreed format-independent reporting operation

The application or integration decides what content to report, including which
information appears normally and what is added by `--details`. Core does not
select domain facts, add detail when a format changes, or infer a summary.
Retain the agreed `--details` spelling for the standard commands.

Provide one public operation through the invocation Reporter that accepts the
selected report data and an optional plain-text template, without requiring a
handler to switch on the selected format or configure an encoder. Core renders
both concise and detailed report values. `invocation.Reporter().Report(report)`
illustrates the intended operation only; it is not a selected signature or an
existing API.

Provide a corresponding writer-based API for rendering outside an invocation.
Both entry points share the rendering implementation. Invocation reporting uses
the existing Reporter lifecycle for visibility, destinations, delivery, and
presentation failures, preserving domain outcomes and causes. This extends the
existing reporting facility rather than creating a second delivery lifecycle.

### Agreed shared representation rules

**Agreed:** use Go's standard `encoding/json` serialization conventions to
interpret ordinary Go report values. Prepare one logical representation for
automatic selection and rendering in text, YAML, and JSON. This selects how Go
values become report data; it does not select JSON as the default output format.

Reuse the standard library's field selection, JSON tags, omission rules, nested
value handling, and supported custom JSON serialization. Avoid a new CommandKit
tag convention or reflection-based serialization engine. Suitable upstream
values can reuse their existing JSON contract; thin projections remain useful
when the desired operator content differs from that representation.

- **One field interpretation.** JSON field tags and custom serialization govern
  ordinary values in every output format. Conflicting YAML tags or YAML-specific
  serialization do not change that interpretation. For example, a field tagged
  `json:"retry_count" yaml:"retries"` appears as `retry_count` in both JSON and
  YAML. Do not independently serialize the original Go value with each encoder.
- **Explicit omission.** Honor omissions selected by the JSON contract. Core
  does not additionally hide zero, false, empty, or null values for brevity.
  Preserve the remaining distinctions among absent, null, false, zero, and empty
  values through conversion and rendering.
- **Preserved numeric values.** Avoid precision loss in intermediate conversion,
  including accidental rounding of large integers through floating point. This
  preserves the serialized value rather than promising precision beyond the
  supplied value and its serialization contract.
- **Observable failures.** Values rejected by the serialization contract produce
  presentation errors through the existing reporting lifecycle. Do not silently
  drop unsupported data or substitute arbitrary string representations.

**Agreed separate treatment:** native configuration YAML uses explicit core
adaptation with defined cross-format mappings, not blind conversion through the
ordinary JSON path. Preserve native YAML semantics and disclosure rules when
YAML is requested, and avoid silent loss of richer YAML information. The adapter
API, supported mappings, and multiple-document behavior remain part of the
native-document decision below. This is not an exemption from universal formats
or permission for integration-owned formatting pipelines.

This approach reduces new machinery by reusing standard serialization and
centralizing the remaining conversion and rendering work. Exact internal
representation and adapter APIs remain implementation design tasks; a large
public document model is not selected. Validate representative reports before
assuming that an upstream type can be handed off without adaptation.

### Agreed plain-text rendering

Core provides a default plain-text fallback and accepts an optional template
from the application or integration as part of the report handoff. When text is
selected, core uses the template if supplied and otherwise renders the selected
report data using its standard fallback. A template selects text automatically
only when the operator omits `--format`; explicit YAML or JSON takes precedence.
YAML and JSON use the same selected content and shared representation rules,
independently of the text
template. Applications do not supply separate YAML/JSON writers.

Recommend a readable hierarchical fallback with named fields, nested values,
and list items. A template can arrange the supplied content as a sentence,
table, or another useful presentation. Core owns template execution, shared
formatting helpers, and delivery errors. Go's `text/template` and reusable
templates declared once are implementation candidates; the template API,
helper set, and exact fallback layout still need design.

This resolves the earlier human-oriented presentation discussion (point 4).
Universal core formats resolve point 5; per-command supported-format lists and
per-format application renderers are not the selected mechanism.

### Remaining core reporting decisions

- **Text handoff.** Settle the template API and helper functions, whether
  templates receive the original Go value or shared representation, fallback
  conventions, and template preparation and failure behavior. Prefer a small
  reusable mechanism; applications select content and layout, core renders it.
- **Native documents and multiple results.** Define how native safe YAML
  snapshots and ordered multi-scope documents enter the shared representation,
  and how multiple documents/results appear in JSON and text. Preserve native
  YAML meanings and disclosure rules without silently losing data or exempting
  commands from universal format support. Keep format translation in core and
  domain evidence selection in the integrations.

Exact public signatures, flag integration/collision handling, and replacement
of existing format plumbing are implementation design tasks. The decisions
above do not reopen content selection, JSON conventions for ordinary report
values, universal formats, automatic selection, or joint format delivery.
Report serialization does not settle the separate JSON input-number conversion
choices in OD-2 and OD-11.

## Initial report implementation approach

Use the accepted OD-4 through OD-6 flags and formats as a practical starting
point. Keep added code, report types, and translations proportionate. Beta
feedback on actual reports should guide changes. Resolve the core design details
above, then implement the agreed extension points without delaying delivery
for exhaustive layout design or speculative additional renderers.

The repository already uses `go.yaml.in/yaml/v4` and small Go-value-to-YAML
writers in core and both integrations. Consolidate suitable report paths onto
the new core API and share encoder configuration and representation helpers.
Use the capability in core, both integrations, and a maintained application-owned
command example. A separately versioned output module or custom serialization
engine is not needed. Follow module release/dependency ordering under OD-7.

Prefer handing off suitable native inspection/report values or a thin Go
projection using the agreed JSON serialization conventions. Do not mirror a
whole upstream object graph just to rename fields or rearrange equivalent data.
Reuse small path, snapshot,
location, and duration projections where they are genuinely needed. Core reuses
the JSON contract across renderers; migrate YAML-only report tags or provide a
thin projection where necessary. Native configuration documents follow their
explicit adaptation path rather than the ordinary Go-value path.

Exceptions serve concrete report semantics: preserving absent/null/false/zero
and empty collections, expressing paths and durations readably, projecting safe
snapshot values, and retaining native redaction. Encode report/inspection values,
not engines, mutable runtime configuration, or request credential storage.
Preserve native-document semantics and the concise diff and validation content
selections. Integrations prepare those values and any text templates; core owns
rendering. Native-document adaptation is part of the shared representation
design, not an integration-owned alternative formatting pipeline.

Separate content projection from format rendering and from invocation delivery.
Use the existing Reporter and outcome lifecycle for delivery and failures.
Share common helpers without forcing text output through a YAML round trip or
forcing semantically different reports into one schema. Validate representative
reports and meaningful adaptation boundaries, rather than freezing every
incidental formatting detail in tests.

## Work sequence

1. **Confirm remaining implementation choices.** Use the accepted flags, report
   content, and automatic format policy as the MVP target. Resolve the remaining
   text-template and native-document decisions; specify the public API and
   internal conversion design under the agreed JSON representation contract.
   Resolve outstanding acquisition/binding grammar and flag collisions; use
   concrete examples to review report details during implementation rather than
   reopening accepted scope.
2. **Implement shared core report output.** Deliver the agreed automatic format
   policy, universal `--format` selection, format-independent Reporter
   operation, writer-based API, and shared representation/encoding machinery.
   Deliver YAML encoding, text fallback/templates, and JSON encoding together
   in the core feature release. Exercise the public API with core reporting
   and an application-owned command example, and consolidate suitable existing
   integration reports onto it. Cover the selected contracts and update their
   canonical documentation with the implementation. Complete this prerequisite
   before building the downstream additions; use the aligned workspace until
   the core release is available under OD-7.
3. **Adopt v0.19.0.** Update `integrations/ckprompt/go.mod` and `go.sum`, then
   [module attribution](../../integrations/ckprompt/docs/oss/attribution.md)
   against the released notices and source commit. Update the unpublished
   candidate note and affected canonical dependency/compatibility guidance.
   No core Go-minimum increase follows from this adoption.
4. **Implement request inspection and selection.** Add preview, literal-text
   input and renamed file-input flags, applicable override flags,
   provider-parameter input, and namespace selectors. Implement
   public `ckprompt` execution-flag collections on existing core bindings and
   reuse them in the standard commands. Generate scoped convenience aliases and
   provide a collection for installing the commands and routing declarations.
   Reuse the standard suite's lifecycle and preserve existing application adapter
   seams. Render suitable new reports through the shared core API.
5. **Implement shared configuration inspection.** Add discovery and metadata
   within `config explain`, structured diagnostics via `config validate --details`,
   detailed diff presentation, and source evidence on failure in `ckconfig`.
   Retain the six-command suite and wire native PromptKit facets through
   `ConfigScope`. Add focused effective display, source selection, and bounded
   metadata/diagnostic filters using those evidence capabilities. Extend typed
   comparison selection and add the agreed assertion outcome. Implement explicit
   override acquisition and comparison-side wiring under OD-11 as a separate
   reviewable unit. Use the shared core API under the initial report
   implementation approach. Keep boundary coverage with each change.
6. **Update operator and consumer documentation.** The CLI reference owns
   syntax, report schemas, availability, and outcomes; GoDoc owns callback and
   value contracts. Extend maintained simple/composed examples to demonstrate
   the new CLI tasks using local fixtures, without adding application-internal
   execution helpers. Record intentional compatibility effects in module notes.
7. **Align module dependencies and validate.** Prepare the core release needed
   by both integrations and the `ckconfig` release needed by `ckprompt`. Align
   requirements/checksums and complete the validation below. OD-7 addresses
   interim workspace development and dependency order.
   Publication and hosted delivery remain separate actions under the
   [release procedure](../release.md).

## Validation and completion checklist

Select focused boundary tests under the [testing policy](../policy/testing.md).
The checklist concerns core reporting and adapter/CLI behavior; it does not ask
CommandKit to retest PromptKit rendering, schema, namespace, or ConfigKit
resolution algorithms.
Default tests remain offline and independent of real credentials.

- [ ] Remaining text-template and native-document decisions are recorded.
  Public signatures and shared representation conventions are
  documented with implementation.
- [ ] Core owns universal `--format` options, help, validation, and selection.
  Added core formats work with existing commands without refactoring or local
  allowlists. Unknown selections fail before acquisition, and selected formats
  do not leak between invocations.
- [ ] Explicit operator selection overrides automatic selection. Without it,
  a text template selects text; otherwise core selects from the shared report
  shape. Cover scalars, nonempty string lists, mappings, mixed/nested lists,
  empty collections, and null. The initial API has no command format defaults.
- [ ] Automatic selection uses the logical report after adaptation, once per
  complete report. Native YAML source strings are not mistaken for string
  configuration values. Focused configuration values follow the same rules.
- [ ] Plain text, YAML, and JSON ship together; representative reports exercise
  shared representation and explicit selection across all three.
- [ ] Plain text uses the supplied template or core's fallback. Core owns
  rendering and errors in both cases. The integration chooses concise/detailed
  content; changing format does not implicitly change the selected detail level.
- [ ] The invocation and writer-based public APIs share rendering behavior;
  handlers submit report data without their own format switches or encoder
  setup. Existing quiet-mode, presentation-failure, and domain-outcome behavior
  is preserved through the Reporter lifecycle.
- [ ] Ordinary Go reports follow the standard JSON contract across formats,
  including JSON tags, supported custom serialization, and selected omissions.
  Conflicting YAML tags do not rename fields or change values in YAML output.
  Verify that automatic selection follows the resulting logical shape.
- [ ] Representative reports retain null/false/zero/empty distinctions and
  numeric values through conversion, including large integers. Unsupported
  values and serialization failures remain observable presentation failures.
- [ ] Native YAML follows explicit core adaptation with the selected mappings,
  retaining native meaning without silent loss through JSON conversion.
- [ ] Core, both integrations, and a maintained application-owned command
  exercise the public reporting capability. Suitable duplicate selection and
  encoding code is removed; core has no optional integration dependencies.
- [ ] Dependency, checksums, attribution commit links, and candidate notes match
  the final selected module versions.
- [ ] All three compatibility changes and corrected credential wording are
  documented, with earlier v0.18.0 migration guidance retained where relevant.
- [ ] The authentication response-limit reason survives report projection with
  native unknown facts. Smoke preparation errors retain supported causes and
  operational outcomes, including the no-report case; no model dispatch is
  introduced by CommandKit to handle them.
- [ ] `promptkit show prepared PROMPT_ID` forwards the intended request and
  faithfully reports native fields, using automatic selection and accepting
  universal format choices.
  Help identifies the argument as a prompt ID and explains resource I/O and
  rendered content disclosure. Its CLI path makes no model call and does not
  create/execute retained prepared handles.
- [ ] New flags preserve selected omission/empty/zero semantics, parse malformed
  inputs through the existing usage path, and do not leak state between runs.
  Numeric decoding of provider JSON matches the selected strategy in OD-2.
- [ ] The same public execution-flag collection works in a standard subcommand
  and an application-owned command with its own typed input. Parsing, presence,
  metadata, and selected subsets remain consistent; omitted retry values retain
  the applicable native defaults. Application execution behavior remains outside
  the collection.
- [ ] Canonical `--llm-` flags and scoped convenience aliases follow OD-2.
  Alias generation covers only enabled commands and applicable flags, shares
  canonical binding/presence behavior, and preserves mixed-spelling occurrence
  order. Generic spellings remain available to unrelated application commands.
- [ ] The convenient installation collection includes commands and their scoped
  aliases; canonical-only installation remains available. Help and migration
  guidance explain both forms without requiring consumer-maintained alias lists.
- [ ] Text and file input names and aliases follow OD-2. Literal content,
  including empty text, reaches native inline inputs; file bindings remain file
  references. Examples, help, and documentation use the selected meanings.
  Verify that the last command-line occurrence for a name wins across text/file
  forms and all aliases, preserving actual occurrence order.
- [ ] Output-contract override and appended-message flags remain outside this
  adoption, with their operator use cases retained in future work.
- [ ] Opt-in namespace selectors combine declared suite defaults with supplied
  fields in one native view update. Omission preserves each declared default;
  explicit empty values clear only the selected default. Qualified selections
  and catalog filters retain their native meanings. Custom scoped loaders remain
  usable without the option. Canonical namespace names and scoped aliases match
  OD-3, with an explicit applicability table.
- [ ] The full configuration suite retains six subcommands. Explanation
  discovery and validation diagnostics are modes of existing commands, with
  capability-aware help and selected mode/flag combination checks.
- [ ] Bare `config explain` displays help successfully, presenting `--list` and
  `--path` as the two alternatives. Selecting both modes is a usage error;
  explicitly supplied `--path ""` selects root explanation rather than help.
- [ ] Discovery supplies a compact text template, which core selects when no
  format is requested, with compact path/presence/explicitness fields and the
  selected `--historical`, `--under`, and `--explicit` behavior. Historical-only
  paths and unavailable discovery are not misreported as current implicit
  values or an empty configuration.
- [ ] Metadata discovery through `config explain` distinguishes effective and
  historical paths, retains available history on absent lookup, and projects
  native field/change records.
- [ ] Default `config diff` retains its concise additions/changes/deletions
  report. Optional `--details` uses the same comparison records to present both
  snapshots and presence/redaction/hidden-change evidence. Cover additions,
  deletions, explicit null, empty comparisons, sequence-level changes, and
  report-delivery failures without extra configuration loads or comparisons.
  Detailed YAML uses one before/after entry per path and an explicit empty list
  when there are no differences.
- [ ] Focused display preserves native snapshot content and distinguishes
  missing/historical-only paths from explicit null. Whole-document display
  retains native YAML semantics when that format is selected. Focused display
  uses one scope and hands off the logical value without a snapshot wrapper or
  text template; core applies automatic or explicit selection. Absent effective
  paths and unknown source IDs produce clear operational failures.
- [ ] Source-ID selection works on successful and failed acquisitions. Path,
  explicitness, severity, and code filters preserve the selected evidence and
  source references without masking the acquisition outcome.
- [ ] Independent comparison selectors preserve the chosen inheritance and
  repeatable-value rules, side-specific checks, and shared-state lifecycle.
  Explicit empty right-side collection selection is designed and covered.
- [ ] Assertion mode distinguishes equality, native differences (including
  hidden changes), usage errors, and operational failures with statuses
  `0`, `3`, `2`, and `1` respectively, without changing ordinary diff outcomes.
  Report-delivery failures remain observable.
- [ ] Only supplied CLI overrides reach opted-in loaders under OD-11, with typed
  values and safe flag labels,
  selected comparison-side behavior, native errors, and returned provenance
  preserved. No tests independently re-establish ConfigKit override semantics.
- [ ] Default validation remains concise; `--details` selects the additional
  diagnostic report with a text template. Core automatically selects text when
  that template is supplied, while explicit formats still win. Changing format
  alone does not enable detailed mode.
  Severity/code filters, evidence availability, no-match presentation, and
  known duplicate-warning handling preserve the underlying validation outcome.
- [ ] `config sources` and `config validate --details` report
  available evidence with an acquisition error;
  the original failure, unavailable-versus-empty evidence, cancellation, and
  report-delivery failures remain distinguishable.
- [ ] Existing providers remain usable; help, version, and capability discovery
  do not start acquisition. New operation/flag metadata and static completion
  match the implemented surface.
- [ ] Maintained consumer examples demonstrate the selected CLI tasks and the
  configuration failure workflow with deterministic local evidence, including
  collection reuse by an application-owned command.
- [ ] Suitable reports use direct Go-value serialization or thin projections,
  sharing the core representation and rendering machinery. Necessary adapters
  preserve native meaning without duplicating a full report tree per format.
- [ ] Canonical documentation, module release notes, and roadmap links agree
  with the implemented boundary. Open decisions are resolved or deliberately
  superseded before the corresponding behavior is claimed complete.
- [ ] Final independent-module and aligned-workspace suites pass, with the
  dependency identities used by each recorded.

With the documented Go 1.27.0 toolchain selected, run
`GOWORK=off GOTOOLCHAIN=local go test ./...` independently in the root,
`integrations/ckconfig`, and `integrations/ckprompt`. Prepare dependencies before
offline execution as described in the [release procedure](../release.md).
Then validate the aligned workspace from the root with:

```sh
GOTOOLCHAIN=local go test ./...
GOTOOLCHAIN=local go test ./integrations/ckconfig/...
GOTOOLCHAIN=local go test ./integrations/ckprompt/...
```

Use the [development guide](../development.md) for toolchain/workspace setup and
documentation checks. Reuse successful checks for unchanged content; these
adoption checks do not add permanent publication gates. The earlier disposable
dependency-only compatibility test is preliminary evidence, not completion
evidence for these features.

## Deferred work

Focused backend inspection remains in [future work](future.md#promptkit-inspection-and-selection-extensions)
until a released upstream API supports it. Do not reconstruct backend selection
from configuration to deliver it in this roadmap. General execution, prepared
handle lifecycle, sessions, and observer convenience APIs remain application
responsibilities. Persistent configuration editing, new live probes, dynamic
completion, and unrelated deferred proposals are not added by this roadmap.
The [shared core API](#shared-core-report-output-prerequisite) targets text,
YAML, and JSON, with automatic availability of newly added core formats.
XML is removed from current consideration; Markdown is not selected for this
adoption. The three initial formats land together in the core feature release.
Transient acquisition overrides are included under OD-11.
Output-contract override and appended-message flags are deferred under OD-2
and retained in
[future work](future.md#promptkit-inspection-and-selection-extensions).
Discovery tracing and secrets-directory bootstrap commands remain deferred:
the source inventory is not a trace of rejected search candidates, and bootstrap
performs application startup effects.

## Open Decisions

These decisions concern significant choices within the proposed scope. Resolved
items retain their numbers and record the agreed decision. OD numbers are local
to this roadmap, not the retired adoption documents.

The core ownership, JSON representation conventions, text fallback/template,
universal-format, automatic-selection, and joint format-delivery decisions are
now agreed above. Remaining details are listed under
[remaining core reporting decisions](#remaining-core-reporting-decisions).
Outstanding integration choices are provider JSON decoding in OD-2, namespace
applicability in OD-3, empty comparison collections and binding design in OD-9,
and override grammar/acquisition details in OD-11. Exact helper names and report
layouts otherwise remain ordinary implementation choices, not unresolved scope.

### OD-1: Preview command and report presentation

**Agreed:** use `promptkit show prepared PROMPT_ID` with the complete relevant
`PreparedRun` projection. The structured mapping, without a dedicated text
template, selects YAML through core's automatic policy. Universal format choices
and automatic selection supersede both the earlier YAML-only restriction and
the command-specific default proposal. The argument names
the prompt to prepare, not a saved prepared object. A single native preparation
supplies both validation and preview evidence.

The command sits beside definition inspection and emphasizes that the report
contains resolved settings and rendered content. Use help wording such as:
"Prepare a prompt request and show the resulting messages and settings without
calling the model."

Document resource I/O and rendered content disclosure directly in help and CLI
guidance. The report is an inspection snapshot, not a saved execution handle or
a guarantee that later execution uses the same snapshot or succeeds. Core's
text fallback supplies explicit `--format text` output without requiring a
dedicated preview template; a specialized template is not required for initial delivery.

### OD-2: Request controls and provider-parameter grammar

**Agreed:** execution flags are public reusable CLI collections owned by
`ckprompt`, available to standard and application-owned commands using existing
core APIs. Give validation and preview the applicable execution controls already
on smoke tests, and add a singleton `--llm-extra-params JSON` object option to
all three. Use native whole-map replacement, including native behavior for
empty maps. Specify JSON number decoding deliberately so supported values reach
PromptKit without accidental precision loss or new numeric guarantees. The
single-object form is selected over repeated key assignments.

Retain the authoritative-builder rule: standard flags seed a request, and an
application builder can return its complete replacement. Do not reapply CLI
values after the builder returns.

**Agreed naming and aliases:** use `--llm-` canonical names throughout the
reusable request-control family. Standard `promptkit` commands also accept the
unprefixed convenience spellings wherever the corresponding flag applies.
Application-owned commands receive canonical names from the reusable collections;
applications may deliberately install convenience aliases on their own commands.

| Canonical flag | Convenience alias within applicable `promptkit` commands |
| --- | --- |
| `--llm-endpoint` | `--endpoint` |
| `--llm-model` | `--model` |
| `--llm-temperature` | `--temperature` |
| `--llm-max-tokens` | `--max-tokens` |
| `--llm-top-p` | `--top-p` |
| `--llm-timeout-seconds` | `--timeout-seconds` |
| `--llm-service-tier` | `--service-tier` |
| `--llm-reasoning-effort` | `--reasoning-effort` |
| `--llm-api-key-env` | `--api-key-env` |
| `--llm-transient-retries` | `--transient-retries` |
| `--llm-extra-params` | `--extra-params` |
| `--llm-backend` | `--backend` |
| `--llm-profile` | `--profile` |
| `--llm-prompt` | `--prompt` |
| `--llm-session-id` | `--session-id` |
| `--llm-var` | `--var` |
| `--llm-input-text NAME=TEXT` | `--input-text`, `--llm-input`, `--input` |
| `--llm-input-file NAME=PATH` | `--input-file` |

Retain existing value syntax and units, including integer timeout seconds.
The input naming and content changes are specified below. Commands taking a
positional prompt ID retain that argument; this naming decision does not add a redundant prompt flag. Execution,
resource-selection, and request-input collections may remain separately
composable. Namespace controls remain subject to OD-3.

**Agreed assembly approach:** keep alias generation in `ckprompt`; alias
assembly requires no core upgrade. Define each flag-to-alias relationship once
and generate existing `FlagAliasFor` routing declarations from the flags selected
for each enabled canonical command. Do not maintain a separate hand-written matrix of
all command/flag combinations. Aliases target the original flag binding rather
than introducing duplicate bindings. Both spellings retain core parsing,
presence, and occurrence-order behavior.

Offer a convenient collection containing the command family and its scoped
routing declarations, using existing `[]commandkit.Declaration` installation.
Keep `ckprompt.Command(suite)` available for canonical commands without the
convenience aliases. Exact helper names remain implementation choices. Generate
aliases only for enabled commands and applicable flags; do not install
application-wide aliases or make consumers reproduce the command/flag matrix.
Applications can install selected aliases on their own commands through the
existing core API. Subtree alias scopes and a new core declaration-bundle type
are not part of this adoption.

Help should identify canonical names and their applicable aliases using current
core presentation. CommandKit is alpha with no consumers; redesign without
compatibility constraints is explicitly accepted for these flags. Update implementation, examples, help, and documentation together; do not
retain old meanings merely for compatibility. Canonical-only installation does
not supply convenience aliases.

**Agreed input forms:** include literal text alongside file input for
`promptkit requirements validate` and `promptkit show prepared`. The concrete
operator task is preparing one selected prompt with a short, disposable sample
without creating a fixture file. File inputs remain useful for substantial
content and repeatable artifacts. These operations make no model call and do
not establish model-output quality or application-workflow success. Assess
usefulness within these standard commands; speculative applicability to
multi-prompt application workflows is not a reason to add flags.

Use the explicit canonical pair `--llm-input-text NAME=TEXT` and
`--llm-input-file NAME=PATH`. The scoped aliases in the table include both
`--input` and `--llm-input` for literal text. They route to the original text
binding with the same parsing, presence, and occurrence-order behavior.
`--input` no longer means a file path; file bindings use the explicit file form.
Do not infer file access from literal content that resembles a path.

Provide repeatable named bindings, splitting at the first `=` and preserving
literal content, including explicit empty text, through native `Inline` inputs.
File bindings continue to use native `File` references. Keep the canonical
forms available through reusable request-input collections; application commands
choose whether these bindings fit their workflow and may opt into aliases.
None of these aliases is application-wide by default. Do not add prompt-input
flags to smoke tests, which use their own diagnostic content.

**Agreed input precedence:** the last command-line occurrence for a given input
name wins across text and file bindings, including every alias. Implementation
must preserve actual occurrence order rather than applying one flag collection
after the other in a fixed order. Select the necessary binding composition
during implementation; do not claim this behavior from independent flag binding
alone.

**Deferred output-contract overrides:** no CLI override is included in this
adoption. Retain the candidate in
[future work](future.md#promptkit-inspection-and-selection-extensions);
existing configuration and application builders remain available.

**Deferred appended-message flags:** no CLI message-appending option is included
in this adoption. The potential standard-command task is reproducing a request
with application-added messages for preparation validation or preview. Revisit
when that is a demonstrated operator requirement; ordinary named inputs remain
available for inspecting prompt definitions with concrete content. Retain the
candidate in [future work](future.md#promptkit-inspection-and-selection-extensions).
No message-file format, flag syntax, or role-selection interface is selected.
Native application-supplied appended messages remain part of prepared-request
inspection; deferring flags does not remove that report evidence. No
general-purpose request-building API follows from these CLI choices.

### OD-3: Namespace flags and loader defaults

**Agreed:** make the standard namespace selectors opt-in with explicit
application-supplied defaults for prompts, profiles, and backends in the suite.
`ckprompt` combines those defaults with the supplied CLI fields, then applies
one native `WithNamespaces` call. Loaders using this option leave namespace
default selection to that adapter rather than relying on hidden engine-view
state. Without the option, existing scoped loaders continue as before.

Omitting a selector preserves its declared default. Supplying a namespace
replaces that default for the invocation; supplying an explicitly empty value
clears it. Each resource type is independent. For example, overriding the
prompt namespace must preserve the declared profile and backend defaults.
Qualified resource IDs pass through unchanged. Catalog namespace filters remain
separate from these resource-resolution defaults.

The standard option owns composition instead of requiring an application
callback to merge every selection. Applications needing custom namespace
selection can retain their own loading behavior without enabling the option.

**Agreed names:**

| Canonical selector | Scoped alias within applicable `promptkit` commands |
| --- | --- |
| `--llm-prompt-namespace` | `--prompt-namespace` |
| `--llm-profile-namespace` | `--profile-namespace` |
| `--llm-backend-namespace` | `--backend-namespace` |

Keep catalog `--namespace` filtering separate. Applicability to individual
commands and exact public helper signatures remain design tasks; install only
selectors with a defined use for that operation.

### OD-4: Configuration path and metadata presentation

**Agreed placement:** path discovery is part of `config explain`; no separate
path or metadata command will be added in this roadmap.

**Agreed mode selection:** bare `config explain` displays command help as a
successful help request. Help explains that an operation requires either
`--list` to discover paths or `--path POINTER` to explain a selected path. This
makes both capabilities visible instead of implicitly choosing discovery.

- Neither mode selected: show help, with success on successful help delivery.
- `--list` selected: discover configuration paths.
- `--path` supplied: explain that path.
- Both modes selected: report a usage error.

Track path presence separately from its value: explicit `--path ""` selects
the root explanation, not help. This deliberately replaces the current
missing-path usage error; automatic discovery on a bare invocation is not
selected.

**Agreed initial presentation:** supply a compact text discovery template, which
core selects automatically when no format is requested. Explicit alternatives
use core's universal `--format`. Operate on one scope at a time.
List current effective paths by default; `--historical` adds historical-only paths
rather than selecting only removed paths. Show path, current/historical-only
presence, and available explicitness. Do not equate non-explicit values with
application defaults or historical-only metadata with explicitness false.

Use `--under POINTER` to narrow listing to a subtree and
`--explicit=true|false` to select current explicitness. Omitting explicitness
filtering includes both states and, when requested, historical-only entries;
historical-only entries do not match either current explicitness value. Apply
subtree filtering to parsed paths, not textual prefixes. These filters and
`--historical` belong to listing mode; `--path` continues to select detailed
explanation, including its available metadata and history.

Keep values and change history out of the compact listing. Include useful field
metadata in detailed explanation without repeating existing evidence. If a
provider cannot supply discovery metadata, report that capability as unavailable
rather than presenting an empty configuration; its existing path-specific
explanation remains usable. These are sufficient starting choices for the MVP;
exact field layout and mode-specific error wording can be decided in code and
reviewed with concrete examples.

### OD-5: Detailed comparison selection and shape

**Agreed:** retain the existing concise additions/changes/deletions report as
the default for `config diff`, and add optional `--details` for investigating
changes. The default serves human operators who need a quick overview; retaining
it is a presentation choice, not a compatibility constraint.

The detailed mode should help an operator compare old and new values,
distinguish absence from explicit null, and understand concealed changes even
when the displayed safe snapshots look equal. Present native paths, left/right
snapshots, presence, redaction, and hidden-change evidence in readable YAML.

**Agreed initial layout:** one entry per changed path in a scope-labeled YAML
report, with before/after snapshots rather than expanded versions of the three
summary categories. Display snapshot values as YAML values, preserving explicit
presence so missing and null remain distinct. Show redaction and concealed-change
annotations where relevant; omission of an optional annotation has a defined
meaning and never relies on recognizing a marker-looking string. Prefer ordinary
Go fields and serialization tags to custom omission logic. An empty comparison
has an explicit empty difference list. Both concise and detailed comparison
hand off structured mappings without a text template; core's automatic policy
selects YAML. Universal format choices supersede the earlier YAML-only detailed
restriction. The same selected comparison evidence is handed to core in every
format; explicit text uses core's fallback.

Keep the projection close to native report values, using the
[shared reporting approach](#initial-report-implementation-approach) rather than
extensive translation for cosmetic layout. Exact field names are implementation
choices for the initial release and can evolve with beta feedback.

Keep implementation localized to detail selection and a report projection,
with focused boundary tests, help, and examples. The existing `Scope.Compare`
contract and both native adapters already return the required difference
records. Reuse that data and existing safe-snapshot decoding; no new comparison
callback, additional load, or comparison algorithm is required. Use the shared
core report output capability; detailed comparison needs no domain-specific core
API. A side-by-side terminal display is not part of this adoption. Comparison
exit status follows OD-10.

### OD-6: Failure evidence and structured diagnostic delivery

**Agreed placement:** structured configuration diagnostics are part of
`config validate`; there will be no separate diagnostics command. Source
inventory on failure remains part of `config sources`.

**Agreed:** add `config validate --details`, consistent with the optional detail
mode on `config diff`. Retain concise validation by default, including its
ordinary warning and error reporting. Detailed mode reports available native
diagnostic records and source references alongside the validation result. The
purpose is to help a human operator locate and investigate configuration
problems; it does not introduce new validation rules. Changing the output format
does not implicitly enable the additional detail.

Preserve available evidence when loading fails: `config validate --details`
reports diagnostic findings and relevant source references, and `config sources`
reports acquired source inventory. These describe the current invocation, not a
previous failed command. Keep the original failure and its supported cause
identity; successfully displaying evidence must not turn failure into success.
A failed load does not imply an effective configuration is available.

Build optional `ckconfig` evidence facets that can accompany an acquisition
error. Unlike detailed comparison, the existing adapters need to carry additional
structured evidence through to reporting. Use current core reporting and outcome
handling; no generic cross-family diagnostics framework is required.

**Agreed initial presentation:** supply a detailed validation text template,
which core selects automatically unless the operator requests another format.
The template begins with scope and outcome, then shows readable findings with their available
messages, severities, codes, configuration paths, and source locations. Place
useful locations near messages;
YAML may use a source legend shared by multiple findings.

Use repeatable `--severity` and `--code` filters in detailed mode. Multiple values
within a filter match any selected value; different filters narrow results
together. Filtering never changes the validation outcome. Distinguish no native
findings, no findings matching the filters, and unavailable structured evidence.
Keep referenced sources needed to interpret selected findings.

Avoid presenting a finding both in the detailed report and as a duplicate
ordinary warning when the records have a known relationship. Do not deduplicate
by guessing from message text. Preserve unrelated messages and the terminal
failure explanation. Keep this coordination within the integration rather than
introducing a general diagnostics framework.

Structured results use the result stream and ordinary messages use the
diagnostic stream. Preserve report-delivery failures separately from the original
operation failure through existing outcome handling. Retain current aggregate
stopping behavior; detailed output does not promise exhaustive validation across
all scopes. Partial-evidence and cancellation presentation should use the same
simple report values and existing reporting lifecycle, with exact layout refined
during implementation and practical testing.

### OD-7: Module release and interim workspace coordination

**Agreed:** complete the core reporting prerequisite and planned integration work
together rather than splitting out a dependency-only PromptKit release. With no
current consumers, an early compatibility release has no demonstrated benefit.
Prepare the core release supplying the reporting API, then a new ckconfig minor
release for the shared API/CLI features, and update the still-unpublished
ckprompt candidate. Both integrations must require a core version supplying the
new API, and ckprompt must require the ckconfig version supplying the shared
work. Confirm candidate status and available versions under the release
procedure before choosing versions.

Use the ignored aligned workspace during joint development. Workspace success
does not establish independent integration correctness with old core or ckconfig
requirements. Before final independent validation, pin released dependency
versions supplying the APIs and validate all three independent modules and the
aligned workspace. Dependency release order is core, ckconfig, then ckprompt.
Publication remains a separate action requiring authorization; this decision
does not authorize publication.

### OD-8: Focused configuration reports and filtering

**Agreed:** add `config show --path POINTER` and
`config sources --source-id ID`; add subtree/explicitness filters to
`config explain --list` and severity/code filters to `config validate --details`.
Keep reports unfiltered by default. The purpose is to reduce noise for a human
operator investigating a known part of the configuration.

`config show` hands off the selected logical configuration value without a text
template. Core selects from its shape: a mapping yields YAML, while a selected
string yields text. Explicit `--format yaml` always requests native effective
YAML, without a snapshot wrapper containing presence/redaction/YAML fields.
All formats render the selected value through the shared representation.
Use the existing explanation capability to obtain the native snapshot. An absent
effective path or unknown source ID produces a clear operational failure. Explicitly present
null remains a valid value; historical-only paths are not effective values.
Path-selected display initially uses one scope, while whole-document
`--scope all` remains available.

Filters change presentation, not validation outcomes. Keep source references
needed to interpret the selected findings. Apply subtree filtering to parsed
paths; distinguish unavailable current metadata on historical-only paths from
an effective value that was not explicitly supplied.

**Selected filter grammar:** OD-4 records discovery filters and OD-6 records
diagnostic filters. Exact report field layout and remaining edge-case messages
are implementation choices for the MVP. No additional snapshot-wrapper report
or aggregate path-selected display is selected for this adoption.

### OD-9: Independent comparison selector bindings

**Agreed:** applications declare which domain selectors support right-side
comparison values, with explicit metadata for their `--against-*` spellings.
Do not generate comparison flags for every application option automatically.
Omission inherits the left value and presence; an explicit right value replaces
it. For repeatable selectors, the supplied right collection replaces the
inherited collection rather than appending to it. This supports comparisons
such as two campaigns without requiring different files or repeating every
unchanged selection.

Domain parsing stays in the declared typed bindings; no generic selector
language is introduced. Review the refinement of ADR 0012 and flag collision
handling before implementation. Exact helper signatures and an explicit way to
select an empty right-side collection remain open. An empty string element is
not necessarily an empty collection; do not equate them implicitly.

### OD-10: Comparison assertion outcomes

**Agreed:** add opt-in `--check`, retaining normal report delivery and ordinary
diff behavior when omitted. Under assertion mode, use status `0` for equality,
`3` for differences, `2` for usage errors, and `1` for operational failures.
This distinguishes a successful comparison that found differences from a
comparison that could not run. Ordinary diff remains successful when it finds
differences.

Base the difference outcome on native records, including concealed changes,
not equality of the displayed safe values. Apply existing reporting outcome
rules, including preservation of a nonzero domain outcome when presentation
also fails; callers can inspect the separate presentation evidence. Document
and test that interaction explicitly. These are selected future behaviors,
not claims about the currently implemented CLI.

### OD-11: Transient configuration overrides

**Agreed scope:** include a declared, opt-in override capability for standard
configuration commands, with repeatable `--set POINTER=JSON` values passed to
application acquisition as native ConfigKit overrides. This enables validation,
inspection, and comparison of temporary settings through consistent CLI syntax.
Providers that do not accept overrides retain their existing operations. No
source file is edited, and no general application-internal convenience API is
required. The loader contract must state how it combines these records with
any existing application-owned overrides; the generic adapter cannot inject
them into an arbitrary loader after the load has completed.

Prefer inline assignments for ordinary one-value experiments. This is the
largest remaining loader integration design item; revisit scope explicitly if
the required acquisition changes prove disproportionate rather than silently
dropping the agreed feature. Settle these details before implementation:

- Split at the first `=`; JSON supplies typed null, boolean, string, numeric,
  array, and object values. Specify numeric conversion to ConfigKit-supported
  built-in forms rather than passing `json.Number` or silently promising
  arbitrary numeric precision. An unambiguous alternate input form may be
  needed for pointer keys containing `=`.
- Forward explicit records only, with safe display labels such as `--set`,
  never raw value-bearing arguments as provenance labels. Preserve native
  duplicate/overlap handling rather than silently collapsing assignments.
- Follow the released mapping-path constraints, including root/index and
  schema-version restrictions, without extending them into a generic patch
  language. Empty, false, zero, and null remain intentional supplied values.
- For comparison, recommend `--set` as the shared baseline and
  `--against-set` as a right-side replacement list when supplied, following
  OD-9's agreed repeatable-selector rule. Define an explicit way to select
  an empty right list before finalizing this grammar; appending or replacing
  individual paths would need a different selected rule.
- Reflect native CLI origins and subsequent resolution in existing reports.
  Test CommandKit parsing, forwarding, and outcome/report adaptation, leaving
  ConfigKit's override algorithm to its own tests.

A structured override file is not selected as the primary interface: it handles
complex values and unusual keys well but adds file setup to ordinary one-value
experiments. It remains a possible supplemental form if needed to resolve the
open grammar cases. Application-specific typed flags remain available, but are
not a substitute for the selected standard CLI capability. No persistent
configuration mutation is authorized by this decision.