docs(plans): rewrite web dashboard plan as separate app, rename plans and CI workflow

Rewrite plan-23 (web dashboard) for standalone architecture: separate
Go binary communicating with sluice via REST API. Stack: htmx +
Alpine.js + Go templates + Pico CSS. Adds webhook auto-registration,
SSE for live approvals, and broker hot-reload requirements.

Rename plan files to yyyymmdd-<name>.md convention.
Rename ci.yml to test.yml and update README badge.

Author: nnemirovsky

.github/workflows/ci.yml .github/workflows/test.yml.github/workflows/ci.yml renamed to .github/workflows/test.yml

@@ -1,4 +1,4 @@
-name: CI
+name: Tests
 
 on:
   push:

README.md

@@ -1,6 +1,6 @@
 # :shield: Sluice — Credential Governance Proxy for OpenClaw
 
-[![CI](https://github.com/nnemirovsky/sluice/actions/workflows/ci.yml/badge.svg)](https://github.com/nnemirovsky/sluice/actions/workflows/ci.yml)
+[![Tests](https://github.com/nnemirovsky/sluice/actions/workflows/test.yml/badge.svg)](https://github.com/nnemirovsky/sluice/actions/workflows/test.yml)
 [![E2E](https://github.com/nnemirovsky/sluice/actions/workflows/e2e-linux.yml/badge.svg)](https://github.com/nnemirovsky/sluice/actions/workflows/e2e-linux.yml)
 [![Lint](https://github.com/nnemirovsky/sluice/actions/workflows/lint.yml/badge.svg)](https://github.com/nnemirovsky/sluice/actions/workflows/lint.yml)
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)