v0.1.2

feat(docs): docs refresh (#186)

Title, fix docs and add an init command.

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> [!NOTE]
> ### Refresh puffgres docs and add interactive scaffold confirmation to
`puffgres init`
> - Reorganizes docs with new sections: *Why puffgres?*, *Programming
model*, *Getting started*, *Deployment model*, *Advanced options*, and
*Command reference*, replacing prior structure.
> - Adds new content explaining the programming model (configs, schema
generation, JSONL transforms, tombstoning, batching, DLQ) and deployment
flow (state persistence, CI checks, OTEL observability).
> - Updates
[`advanced-options.md`](https://github.com/a24films/puffgres/pull/186/files#diff-023356fd90b5614c9f39caf33ec4dcefebfcce01f411ac5cfb76321162e8edd4)
(renamed from `configuration.md`) and
[`command-reference.md`](https://github.com/a24films/puffgres/pull/186/files#diff-e52b776fb88dea7b1c9d3e3925ce65e080c8580bbe99e8be0e7df573d8d20524)
with clearer descriptions and cautionary notes.
> - Adds an interactive confirmation prompt in
[`init.rs`](https://github.com/a24films/puffgres/pull/186/files#diff-f96f7e38336513078799d51a8c3326a2a124a0a829a82f5dd138e30efe166f23)
that previews the scaffold structure and asks for user consent before
creating any files on a fresh project.
>
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