docs: add curated release notes for v0.1.0

RELEASE_NOTES.md

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+# Patchloom for VS Code 0.1.0
+
+This is the first **0.1** release of the official VS Code extension for
+[Patchloom](https://github.com/patchloom/patchloom). It pairs the extension
+with [Patchloom CLI v0.15.2](https://github.com/patchloom/patchloom/releases/tag/patchloom-v0.15.2):
+more install options, a new markdown Quick Action, clearer Batch Apply
+examples, and docs that match the current CLI and MCP surface.
+
+## Highlights
+
+- **Recommended CLI is 0.15.2.** Managed install and **Update Patchloom**
+  still pull the latest GitHub release. Minimum supported CLI remains **0.3.0**.
+- **Insert after section.** New Quick Action for `md insert-after-section`
+  (CLI 0.14+): place a sibling markdown section after a full section body,
+  not just under the heading line.
+- **Easier CLI installs.** README and Getting Started walkthrough cover
+  Homebrew, npm (`npm install -g patchloom` / `npx`), Scoop (Windows),
+  cargo, and the shell installer, in addition to **Install Patchloom**.
+- **Batch plans that match modern CLI.** The Batch Apply template includes
+  fuzzy replace with `--min-fuzzy-score` and `md.insert_after_section`.
+
+MCP servers started through the extension still use `patchloom mcp-server`.
+With CLI 0.15.x that exposes **56 tools** (up from 54 in the 0.10 era).
+
+## Why 0.1.0
+
+0.0.x covered the full setup path (managed CLI, agent rules, multi-editor
+MCP, Quick Actions, Batch Apply, status bar, verify). 0.1.0 is the same
+product, now versioned as a stable minor line and aligned with current
+Patchloom CLI practice for agent and workspace use.
+
+No settings migration is required. Existing `patchloom.path` values and
+managed installs keep working.
+
+## Aligned with Patchloom CLI 0.11–0.15
+
+You do not need every CLI feature to use the extension. These are the
+parts that matter if you upgrade the binary:
+
+| CLI range | What you get with a current managed install |
+|-----------|---------------------------------------------|
+| 0.11–0.13 | Stronger `--contain` coverage, clearer plan/batch errors, match reporting on replace |
+| 0.14 | `md insert-after-section`, batch flags such as `--fuzzy` / `--min-fuzzy-score`, more install channels (npm, Scoop, Chocolatey) |
+| 0.15 | Stable MCP and JSON contracts (`selector` on doc tools, `applied` on write results), 56 MCP tools |
+
+Workspace Quick Actions and Batch Apply still pass global `--contain` so
+paths stay inside the open folder. Containment follows the effective
+working directory (the workspace folder). Patch merge still skips
+containment when the patch file may live outside the project.
+
+## New features
+
+- **Insert after section.** From **Patchloom: Quick Action**, insert
+  sibling content after a full markdown section (for example a `## FAQ`
+  after `## Config` without stuffing text under the Config heading).
+  Same diff preview and Apply flow as other markdown actions. (#198)
+- **Richer Batch Apply template.** Default plan lines demonstrate fuzzy
+  replace and `md.insert_after_section` alongside replace, `doc.set`,
+  `file.append`, and `tidy.fix`. (#198)
+- **Install docs for npm and Scoop.** Getting started and the walkthrough
+  list the channels Patchloom publishes today, so Windows and Node users
+  have a clear path when they are not using Homebrew. (#198)
+
+## Improvements
+
+- **Docs match live CLI/MCP contracts.** Recommended version, tool count,
+  and capability descriptions track CLI 0.15.2. Command shapes used by
+  the extension (`replace` with `--new`, `doc` selectors, MCP `selector`,
+  `agent-rules` mode/platform, line-oriented `batch`) were re-checked
+  against that release. (#198)
+- **Initialize Project and Batch Apply tests.** Extra coverage for
+  agent-rules mode/platform picks and for Batch Apply always invoking
+  `batch` with global `--contain`. (#192)
+
+## Upgrading
+
+1. Update the extension to **0.1.0** (VS Code Marketplace, Open VSX, or `.vsix`).
+2. Update the Patchloom CLI when you can:
+
+```bash
+# Managed install (Command Palette)
+# Patchloom: Update Patchloom
+
+brew upgrade patchloom
+
+npm install -g patchloom
+
+scoop update patchloom
+
+curl -LsSf https://github.com/patchloom/patchloom/releases/latest/download/patchloom-installer.sh | sh
+```
+
+3. If you use MCP in VS Code, Cursor, or Windsurf, restart the MCP host
+   after a CLI upgrade so tool lists and schemas refresh.
+4. Optional: run **Setup Workspace** or **Initialize Project** if you want
+   a fresh `AGENTS.md` for the current CLI guidance.
+
+### CLI version guidance
+
+| Level | Version | Notes |
+|-------|---------|--------|
+| Minimum | 0.3.0 | Older builds may miss commands the extension offers |
+| Recommended | **0.15.2+** | Current MCP tool set, markdown section insert, fuzzy batch flags, path containment |
+
+## Requirements
+
+- VS Code 1.90 or newer (or compatible editors: Cursor, Windsurf, VSCodium)
+- Patchloom CLI 0.3.0 or newer (0.15.2+ recommended)
+
+## Links
+
+- Extension: [VS Code Marketplace](https://marketplace.visualstudio.com/items?itemName=patchloom.patchloom) · [Open VSX](https://open-vsx.org/extension/patchloom/patchloom)
+- CLI release: [patchloom-v0.15.2](https://github.com/patchloom/patchloom/releases/tag/patchloom-v0.15.2)
+- Issues: [patchloom/patchloom-vscode](https://github.com/patchloom/patchloom-vscode/issues)