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weatherreporter/docs/roadmap/implementation.md

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# Workspace Layout Implementation Plan
## Purpose
This document is the staged implementation plan for
[workspace.md](workspace.md). It is written for an LLM coding agent that will
implement the workspace artifact layout refactor in order.
The feature is complete when every managed local run artifact uses the
kind-first, date-scoped layout defined in `docs/roadmap/workspace.md`, metadata
and inspection link those paths correctly, and distributor upload behavior is
unchanged.
## Ground Rules
- Review `docs/policy/architecture.md`, `docs/policy/development.md`, and
`docs/policy/documentation.md` before editing code.
- Keep path construction owned by `internal/state`.
- Do not add user-visible workspace path template configuration.
- Do not use distributor bundle paths for managed workspace paths.
- Do not implement cleanup, migration tooling, or a local publication mirror in
this work.
- Keep optional `--out` and `--out-dir` copies separate from managed workspace
artifacts.
## Target Path Contract
State-managed run artifacts must use these relative path shapes under
`workspace.root`:
```text
reports/<artifact_group>/<valid_start_date>/report.<run_id>.md
snapshots/<artifact_group>/<valid_start_date>/modules.<run_id>.json
snapshots/<artifact_group>/<valid_start_date>/metadata.<run_id>.json
snapshots/<artifact_group>/<valid_start_date>/generated_text_raw.<run_id>.json
snapshots/<artifact_group>/<valid_start_date>/generated_text_result.<run_id>.json
snapshots/<artifact_group>/<valid_start_date>/generated_text.<run_id>.json
snapshots/<artifact_group>/<valid_start_date>/render_context.<run_id>.json
data-packages/<artifact_group>/<valid_start_date>/data_package.<run_id>.yaml
preflight/<artifact_group>/<valid_start_date>/render.<run_id>.json
notifications/<artifact_group>/<valid_start_date>/distributor.<run_id>.json
notifications/batches/<batch>/<batch_start_date>/distributor.<batch_run_id>.json
```
`valid_start_date` and `batch_start_date` are local dates in the effective
report timezone already carried by the resolved report or batch reference.
## Stage 1: State Path Construction
Goal: switch the canonical managed path builder to the target layout.
Implementation:
- Update `internal/state.FilesystemStore.Paths` to build all `ArtifactPaths`
using the target path contract above.
- Keep existing validation for workspace subdirectories, RunID, and report
artifact group.
- Keep `PrepareRenderedReport` responsible for creating the parent report
directory before Scriptorium or template rendering writes Markdown.
- Update `BatchDistributorNotificationPath` to use
`distributor.<batch_run_id>.json`.
Tests:
- Update state path tests to assert the exact new relative paths for at least
`daily`, `today`, `tomorrow`, and `hourly`.
- Update batch notification path tests for
`notifications/batches/<batch>/<date>/distributor.<batch_run_id>.json`.
- Run:
```bash
go test ./internal/state
```
Completion criteria:
- `FilesystemStore.Paths` returns only target-layout managed paths.
- Existing save methods write to the new paths through the existing
`ArtifactPaths` fields.
## Stage 2: Metadata Discovery And Prior Lookup
Goal: make inspection and prior lookup discover the new metadata filenames.
Implementation:
- Replace metadata filename checks that currently rely on the old
`.metadata.json` suffix with a helper that matches only
`metadata.<run_id>.json`.
- Use that helper in `ListReports` and `FindPriorSnapshot`.
- Do not add legacy metadata filename fallback in this refactor; migration is
explicitly deferred by the feature roadmap.
- Keep `LoadMetadataByRunID` behavior based on `ListReports`.
Tests:
- Update report listing tests to create/read `metadata.<run_id>.json`.
- Update prior lookup tests to confirm comparable metadata is found under the
new filename.
- Add or adjust one negative test so non-metadata JSON in the snapshot tree is
ignored.
- Run:
```bash
go test ./internal/state
```
Completion criteria:
- Inspection and prior lookup work with new metadata names.
- Generated-text, module, and render-context JSON files are not mistaken for
metadata.
## Stage 3: App Workflow Expectations
Goal: update app-level tests and any path assumptions outside `internal/state`.
Implementation:
- Do not duplicate path-building logic in `internal/app`; continue asking the
state store for managed paths.
- Update app tests that assert managed report paths, data package paths,
generated-text paths, render context paths, notification source paths, batch
included report source paths, and result JSON paths.
- Preserve the invariant that distributor uploads use the managed Markdown
report path as the upload source and map it to separate distributor bundle
paths.
- Preserve `--out` and `--out-dir` behavior as extra copies outside the managed
report path.
Tests:
- Run:
```bash
go test ./internal/app ./internal/cli
```
Completion criteria:
- App workflows still generate, save metadata, notify distributor, and report
paths using state-owned managed paths.
- No app code constructs the new managed path layout manually.
## Stage 4: Documentation
Goal: move the implemented layout into maintained docs after code behavior has
changed.
Documentation changes:
- Update `docs/internal/state.md` with the new target managed layout and
filename convention.
- Update `docs/operations.md` filesystem layout examples and artifact wording.
- Update `docs/config.md` only if workspace field descriptions need
clarification.
- Keep cleanup, migration, and local publication mirror details in roadmap
docs until those features are implemented.
Validation:
```bash
go test ./internal/state ./internal/app ./internal/config
go test ./...
go run ./cmd/weatherreporter --help
git diff --check
```
Completion criteria:
- Implemented docs match the new behavior.
- Non-roadmap docs do not describe deferred cleanup or local publication mirror
behavior as implemented.
## Final Verification
Before considering the feature complete, run:
```bash
go test ./...
go run ./cmd/weatherreporter --help
git diff --check
rg "\\.metadata\\.json|\\.modules\\.json|\\.data_package\\.yaml|\\.render\\.json|\\.distributor\\.json|generated_text\\.raw|generated_text\\.run" internal docs examples --glob '!docs/roadmap/**'
```
The final `rg` should find no old managed filename patterns in implemented
code, maintained docs, or examples.
## Open Questions
None. The feature roadmap decisions are sufficient for implementation.