From 0f7e98637619bca9c2fca01a86d6adcf47a3ba2a Mon Sep 17 00:00:00 2001 From: Arc-Tech Bot Date: Wed, 13 May 2026 23:50:55 -0400 Subject: [PATCH] Codex task 8 follow-up --- docs/product-spec.md | 106 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 docs/product-spec.md diff --git a/docs/product-spec.md b/docs/product-spec.md new file mode 100644 index 0000000..9ff33cd --- /dev/null +++ b/docs/product-spec.md @@ -0,0 +1,106 @@ +# Product Spec: Real-Time Weather CLI + +## Status + +- Spec container: `product` +- Orchestration: `7` +- Agent: Product Spec Agent +- State: implementation-ready product intent + +## Product Scope + +Build a text-based, real-time weather assistant that helps a user check current local weather and understand it through concise LLM-generated explanations. + +The v1 product is a CLI application. It accepts a user location or local location input, fetches current weather data from a local weather API adapter, formats the raw conditions for terminal display, and optionally asks an LLM adapter to summarize the conditions in plain language. + +The core user outcome is: + +1. The user starts the CLI. +2. The user chooses or enters a location. +3. The app shows current weather conditions for that location. +4. The app can refresh the data during the session. +5. The app provides a short explanation of what the conditions mean for the user. + +The product should make local API data the source of truth for weather facts. LLM output may explain, summarize, or rephrase weather information, but it must not replace measured weather values returned by the weather API. + +## Primary Workflows + +### Check Current Weather + +The user launches the CLI and enters a location, such as a city name, ZIP code, coordinates, or a default local setting supported by the runtime adapter. + +The app displays: + +- Location label. +- Observation timestamp. +- Temperature. +- Feels-like temperature when available. +- Conditions summary. +- Humidity when available. +- Wind speed and direction when available. +- Precipitation or rain/snow status when available. +- Source/status message when data is unavailable or stale. + +### Refresh Weather + +The user can request a refresh without restarting the CLI. + +The app fetches a new observation, updates the displayed values, and reports whether the data changed or the latest API response is unchanged. + +### Get LLM Explanation + +The user can request an explanation for the latest weather observation. + +The app sends only the normalized weather facts and relevant location/time context to the LLM adapter. The explanation should be short, practical, and visibly separate from raw weather values so the user can distinguish measured data from generated interpretation. + +### Save and Resume Local Context + +The app may persist local settings and prior observations using SQLite, per the accepted persistence decision. + +For v1, persistence is user-facing only when it improves the CLI flow: + +- Remembering the most recent location. +- Reusing a default location on next launch. +- Showing that the app loaded previous context when fresh API data is unavailable. + +## User-Facing Boundaries + +The CLI is the only v1 interface. There is no web UI, mobile UI, background daemon, push notification system, or account system in v1. + +Weather data is local/API-backed. The app should be designed so the data provider can be swapped by architecture/runtime layers, but v1 product behavior only promises current weather lookup and refresh through the configured adapter. + +LLM behavior is assistive. The product does not promise meteorological forecasting beyond data returned by the weather API, and it does not treat LLM text as an authoritative source for weather measurements. + +## Non-Goals + +- No graphical desktop, web, or mobile interface for v1. +- No long-range forecast workflow unless the configured local weather API already returns it and another approved spec adds it. +- No severe weather alerting, emergency guidance, or safety-critical decision support. +- No user accounts, cloud sync, or multi-user profile management. +- No direct changes to architecture decisions, database schema, shared API contracts, or runtime event payloads from this product slice. +- No requirement to support every weather provider in v1. +- No continuous background polling after the user exits the CLI. +- No guarantee that LLM-generated text is available when the LLM adapter is unavailable. +- No replacement of raw weather API values with inferred or generated values. + +## User-Facing Acceptance Criteria + +- A user can launch the CLI and request current weather for a location. +- The CLI clearly displays measured weather values separately from any LLM-generated explanation. +- A user can refresh weather data during the same CLI session. +- When weather data cannot be loaded, the CLI shows a clear failure state instead of fabricated weather values. +- When the LLM adapter is unavailable, the CLI still shows raw weather data if the weather API succeeds. +- The app can remember a recent/default location through SQLite-backed local persistence when that capability is implemented by the persistence slice. +- Product behavior remains compatible with the accepted decisions: SQLite persistence and CLI/text runtime target. +- The v1 scope is clear enough for system architecture, data architecture, runtime flow, UI flow, database, and API contract specs to consume without expanding product scope. + +## Completion Criteria + +The Product Spec slice is complete when downstream implementation agents can answer: + +- What user problem v1 solves. +- Which workflows are in scope. +- Which interfaces are out of scope. +- Which facts must come from weather APIs. +- Which content may be generated by an LLM. +- Which user-facing outcomes define success.