Build an Offline-First Multilingual Kirana Daily Ledger and Beckn Sync

Capture regional voice sales entries and offline stock adjustments on local devices. Reconcile buffered changes and export verified Beckn inventory update payloads when network connectivity is detected.

Small township retail shopkeeper

Record spoken daily stock adjustments in regional audio or localized text offline.

Normalize colloquial units into metric standards and build local SQLite transaction journals.

Detect network availability to run mock Bhashini translation pipelines into standard schema descriptors.

Generate Beckn Core 1.0.0 post-fulfillment inventory sync payloads for human shopkeeper confirmation.

Offline-capable web dashboard with audio upload button, local SQLite cache viewer, and sync confirmation modal.

Use mock Bhashini API fixtures for NMT and synthetic Beckn retail catalog templates from GitHub repository. Starter examples below are synthetic. They are not downloaded records.

Beckn protocol specifications Implements Beckn Core 1.0.0 message and context packet structures for asynchronous catalog and post-fulfillment updates.

pydantic-ai, fastapi, sqlite3. Ensures type-safe validation of offline inventory journals and schema compliance for Beckn transaction packets. Local quantized Llama model or hosted Claude API for dialect term extraction.

Submit runnable source, pinned dependencies, setup commands, a working interface, example outputs, and a recorded end-to-end demo. Include tests and an action log.

Parse vernacular item names and informal measures into metric quantities within local storage.

Validate outgoing Beckn payload against version 1.0.0 context and message schema constraints.

Queue offline transactions without loss during simulated network disconnection drills.

Display human reconciliation diff before dispatching server-to-server catalog updates.

```json [ { "input": { "store_id": "kirana-rural-102", "connectivity": "offline", "log_entry": { "spoken_text": "chana dal 5 bori aayi aur 3 packet tel bika", "language_code": "hi" } }, "expected_output": { "journal_status": "buffered", "parsed_items": [ { "item": "chana_dal", "delta": 5, "unit": "bag_50kg", "action": "restock" }, { "item": "cooking_oil", "delta": -3, "unit": "packet_1l", "action": "sale" } ], "sync_pending": true } }, { "input": { "store_id": "kirana-rural-102", "connectivity": "online", "log_entry": { "spoken_text": "namak khatam ho gaya", "language_code": "hi" } }, "expected_output": { "journal_status": "synchronized", "parsed_items": [ { "item": "table_salt", "delta": 0, "unit": "packet_1kg", "action": "out_of_stock" } ], "beckn_payload": { "context": { "domain": "nic2004:52110", "action": "update", "core_version": "1.0.0" }, "message": { "items": [ { "id": "salt-1", "quantity": { "available": { "count": 0 } } } ] } }, "sync_pending": false } } ] ```

Simulates all Beckn network posts; does not alter production retail inventory or execute monetary settlements. Use mock external writes. Require human review before any real deployment.