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weatherreporter/docs/internal/report-registry.md

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# Report Registry Internals
This document describes report identity, valid-period resolution, batch
membership, output naming, artifact grouping, and comparison declarations in
`internal/report`.
## Purpose
`internal/report` is the canonical source for report definitions. App, state,
module building, and CLI wiring consume resolved definitions instead of owning
report identity policy themselves.
## Definition Fields
Each report definition declares:
- report ID and display name
- Scriptorium prompt ID
- generation mode
- valid-period resolver
- comparison strategy
- managed artifact group
- batch output copy filename
- generated-report eligibility
- prior-report compatibility list
- morning or evening batch membership
- default ordered module composition
Markdown report definitions use the `scriptorium_markdown` generation mode.
Their template and structured-text schema identifiers are empty. Hourly Report
declares `generated_text_template` with template ID `hourly` and schema ID
`hourly`; the app uses those identifiers to validate generated text and render
the embedded hourly template.
## Reports
| Report | ID | Prompt | Generation mode | Artifact group | Batch copy | Prior compatibility |
| --- | --- | --- | --- | --- | --- | --- |
| Daily Today | `daily_today` | `weather.daily_report` | `scriptorium_markdown` | `daily` | `daily.md` | Daily Today |
| Tomorrow Report | `tomorrow` | `weather.daily_report` | `scriptorium_markdown` | `tomorrow` | `tomorrow.md` | Tomorrow Report |
| Hourly Report | `hourly` | `weather.hourly_generated_text` | `generated_text_template` | `hourly` | `hourly.md` | Hourly Report |
| 3-Day Outlook | `three_day` | `weather.three_day_outlook` | `scriptorium_markdown` | `three-day` | `three-day.md` | 3-Day Outlook |
| Weekend Outlook | `weekend` | `weather.weekend_outlook` | `scriptorium_markdown` | `weekend` | `weekend.md` | Weekend Outlook |
| Storm Report | `storm` | `weather.storm_report` | `scriptorium_markdown` | `storm` | `storm.md` | Storm Report |
All report definitions are eligible for generation.
## Valid Periods
- Daily Today covers the selected local civil day, or the current local civil
day when no date override is supplied.
- Tomorrow Report covers the next local civil day from generation time.
- Hourly Report covers the half-open six-hour period from generation time in
the effective report timezone. The duration is an internal report constant,
not a configuration field.
- 3-Day Outlook covers the interval from generation time through local midnight
three days later.
- Weekend Outlook covers the upcoming weekend window and is not scheduled for
Sunday morning batch resolution.
- Storm Report covers an explicit event window supplied by the caller.
Storm event windows can be parsed from local `YYYY-MM-DDTHH:MM` timestamps in
the configured timezone or RFC3339 timestamps with explicit offsets. End time
must be after start time.
## Boundaries
`internal/report` defines report metadata and time coverage. It does not fetch
weather data, build module values, compare snapshot contents, write state,
parse CLI flags, or invoke Scriptorium.
The CLI owns public command names. The app maps those command names to report
IDs, then uses the registry for report policy.
## Config Fields Used
The app supplies `weather_api.timezone` as a loaded `time.Location`. Batch
output path copying uses batch output names from report definitions. Report
module overrides can use the `hourly` key for Hourly Report.
## Batch Membership
Morning batches include Daily Today, 3-Day Outlook, and Weekend Outlook except
on Sunday. Evening batches include Tomorrow Report. Hourly Report is not part
of a scheduled batch.
## State And App Usage
- State paths use `ArtifactGroup`.
- Batch output copies use `BatchOutputName`.
- Generation checks `Generated`.
- Module composition defaults use `Modules`.
- Prior lookup checks `CompatiblePriorIDs` and the comparison strategy.
- RunIDs include the resolved report ID.
## Failure Behavior
- Unknown report IDs and batch names return actionable errors.
- Weekend Outlook resolution returns an error when resolved directly on Sunday.
- Storm Report resolution requires start and end, with end after start.
## Tests
Inspect:
- `internal/report/period_test.go`
- `internal/app/app_test.go`
- `internal/cli/root_test.go`
## Invariants
- Report selection goes through the registry.
- Daily Today and Tomorrow Report both use `weather.daily_report`.
- Valid periods are half-open intervals independent of rendered report text.
- Artifact grouping, batch output filenames, generated-report eligibility,
default module composition, comparison compatibility, and comparison strategy
are declared by report definition.