docs: point implementation cross-references at in-repo directories

The three deployment variants now live in one repository: GitHub Actions
at the root, the Go daemon under self-hosted/, the Worker under
cloudflare-worker/. Update comparison tables, clone instructions, and the
Go module path (binary builds as 'self-hosted'); GHCR image name is
unchanged.

self-hosted/README.md

@@ -9,7 +9,7 @@ Self-hosted Go daemon that fires a [Claude Code routine](https://code.claude.com
 
 ## Why this vs `claude-code-routine-trigger`
 
-|                  | [claude-code-routine-trigger](https://github.com/tiennm99/claude-code-routine-trigger) | **claude-code-routine-cron** (this repo) |
+|                  | [GitHub Actions](../) (repo root) | **self-hosted** (this directory) |
 | ---------------- | -------------------------------------------------------------------------------------- | ---------------------------------------- |
 | Runs on          | GitHub Actions runners                                                                 | your infra (Docker host, k8s, NAS, RPi)  |
 | Cost             | free (within GitHub minutes)                                                           | minimal (your infra)                     |
@@ -113,10 +113,10 @@ The request pins `anthropic-beta: experimental-cc-routine-2026-04-01`. When Anth
 ## Build from source
 
 ```bash
-git clone https://github.com/tiennm99/claude-code-routine-cron
-cd claude-code-routine-cron
+git clone https://github.com/tiennm99/claude-code-routine-trigger
+cd claude-code-routine-trigger/self-hosted
 go build .
-./claude-code-routine-cron     # uses env vars from your shell
+./self-hosted                  # uses env vars from your shell
 ```
 
 Tests:

self-hosted/go.mod

@@ -1,4 +1,4 @@
-module github.com/tiennm99/claude-code-routine-cron
+module github.com/tiennm99/claude-code-routine-trigger/self-hosted
 
 go 1.22