Add README

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

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+# task-inventory
+
+Personal task management. Organise tasks, thoughts, and ideas as a hierarchy. Designed to grow into project management over time.
+
+## Features
+
+- Hierarchical tasks with unlimited nesting — create subtasks, reparent tasks, or promote subtasks to roots
+- Tree view (roots only, expandable) and flat view (all tasks)
+- Filters by status, priority, and tag; free-text search across title and body
+- Markdown rendering via a local Gitea instance — preview tab in the editor, rendered inline in the task list
+- Sequential integer IDs
+- Flat NDJSON key-value store — single file, no database required
+
+## Setup
+
+```bash
+npm install
+cp config.yaml.example config.yaml
+# edit config.yaml — add your Gitea URL and token
+node server.mjs
+```
+
+Server starts on `http://localhost:3025` by default.
+
+## Configuration
+
+`config.yaml` (not committed):
+
+```yaml
+gitea:
+  url: https://gitea.example.com
+  token: your_token_here   # needs read:misc scope minimum
+```
+
+If Gitea is not configured, task titles and bodies are shown as plain text.
+
+Environment overrides:
+
+| Variable | Default |
+|---|---|
+| `PORT` | `3025` |
+| `BIND_ADDRESS` | `localhost` |
+
+## Data model
+
+Tasks are stored in `data/tasks.ndjson`. Sequential IDs are tracked in `data/ids.ndjson`.
+
+```
+Task {
+  id          integer          sequential, auto-assigned
+  title       string           markdown
+  body        string           markdown, optional
+  status      open | deferred | done | cancelled
+  priority    high | normal | low
+  tags        string[]
+  parent_id   integer | null   null = root task
+  created_at  ms timestamp
+  updated_at  ms timestamp
+}
+```
+
+## API
+
+All responses: `{ ok: true, ...data }` or `{ ok: false, error: string }`.
+
+```
+GET    /api/tasks
+POST   /api/tasks          body: { title, body?, status?, priority?, tags?, parent_id? }
+GET    /api/tasks/:id
+PUT    /api/tasks/:id      body: any subset of task fields
+DELETE /api/tasks/:id      blocked if task has subtasks
+
+POST   /api/render-markdown   body: { text, mode? }   → { html }
+```
+
+## File map
+
+```
+server.mjs              Entry point — Express 5, all routes
+lib/
+  config.mjs            Loads config.yaml (ENOENT-safe)
+  ids.mjs               Sequential integer ID generator per namespace
+  kv-store.mjs          Flat NDJSON key-value store (auto-load, debounced flush)
+  storage.mjs           Task CRUD wrappers
+public/
+  app.mjs               SPA — state, rendering, dialogs
+  index.html            Shell
+  style.css             All styles
+  templates.html        HTML templates (injected at init)
+  gitea-markup.css      Vendored Gitea markup + chroma CSS for markdown rendering
+  lib/
+    api.mjs             fetch wrappers for all API endpoints
+    dom.mjs             qs(), clone(), set_text(), show(), hide()
+data/                   Created at runtime, not committed
+  tasks.ndjson          All task records
+  ids.ndjson            Sequence counters
+```