docs(installation): add

Amolith created

Change summary

README.md | 35 ++++++++++++++++++++++++++++++++---
1 file changed, 32 insertions(+), 3 deletions(-)

Detailed changes

README.md 🔗 

@@ -9,15 +9,44 @@ SPDX-License-Identifier: CC0-1.0
 [![REUSE status](https://api.reuse.software/badge/git.secluded.site/np)](https://api.reuse.software/info/git.secluded.site/np)
 [![Go Report Card](https://goreportcard.com/badge/git.secluded.site/np)](https://goreportcard.com/report/git.secluded.site/np)
 
-**This README is aspirational!** None of the code exists yet, I'm just getting
-my ideas down. I previously wrote a
-[planning-mcp-server](https://git.secluded.site/planning-mcp-server) that I'll
+The code for this README exists, but requires some testing before release. I
+previously wrote a
+[planning-mcp-server](https://git.secluded.site/planning-mcp-server) that I've
 keep some ideas from, and the overall workflow is about the same. I'm trying a
 CLI over MCP because MCP seems quite protocol-heavy for what _could_ just be a
 few simple CLI invocations. Maybe connecting arbitrary data sources warrants a
 whole protocol like MCP, but I don't think something as basic as this does. Just
 some thoughtful design and prompting.
 
+## Installation
+
+You need both the binary and the prompt.
+
+### The binary
+
+- Using [bin](https://github.com/marcosnils/bin) (highly recommended
+  because of centralised management/updates for statically-linked CLI tools like
+  this)
+  ```bash
+  bin install goinstall://git.secluded.site/np@latest
+  ```
+- Using the [go toolchain](https://go.dev/dl) (requires
+  tracking updates manually)
+  ```bash
+  go install git.secluded.site/np@latest
+  ```
+
+### The prompt
+
+- Using `bin`
+  ```markdown
+  IMPORTANT: Instead of any built-in todo tools you may have available, stick with `np` unless I say otherwise. Try to use it, but if it's not in my PATH, ask me to install it by running `bin install goinstall://git.secluded.site/np@latest`. Start a session with `np s` and it'll guide you from there.
+  ```
+- Using `go install`
+  ```markdown
+  IMPORTANT: Instead of any built-in todo tools you may have available, stick with `np` unless I say otherwise. Try to use it, but if it's not in my PATH, ask me to install it by running `go install git.secluded.site/np@latest`. Start a session with `np s` and it'll guide you from there.
+  ```
+
 ---
 
 ## Overview