Initial commit: SenSu Alpha 0.2.0

- 13-service async plugin framework
- Textual TUI with CLI fallback
- Plugin hot-reload + permission system
- Web management panel (aiohttp)
- Bridge-based inter-module communication
- 10 regression tests

Fixes applied:
- PBKDF2-SHA256 auth (was plain SHA256)
- Auth bypass removed (was allow-all on fail)
- Bare excepts replaced with logged errors
- CatFramework/DreamSu -> SenSu naming unified
- ServiceManager: health checks + startup_order
- Env var credentials (SENSU_ADMIN_PASSWORD etc)

static/web_panel/pages/console.js

@@ -0,0 +1,29 @@
+window.ConsoleModule = {
+    init: () => {
+        const box = document.getElementById('cmd-box');
+        const input = document.getElementById('cmd-input');
+        input.focus();
+        
+        const append = (text, cls='') => {
+            box.innerHTML += `<div style="margin-top:2px;${cls?'color:'+cls:''}">${text}</div>`;
+            box.scrollTop = box.scrollHeight;
+        };
+
+        input.onkeydown = async (e) => {
+            if(e.key === 'Enter' && input.value.trim()) {
+                const cmd = input.value.trim();
+                append(`$ ${cmd}`, 'var(--accent)');
+                input.value = '';
+                try {
+                    const res = await fetch('./api/command', {
+                        method:'POST', headers:{'Content-Type':'application/json'}, credentials:'include',
+                        body: JSON.stringify({command: cmd})
+                    });
+                    const d = await res.json();
+                    append(d.success ? d.output : `Error: ${d.error}`, d.success ? '#ccc' : 'var(--error)');
+                } catch(err) { append(`Network Error: ${err.message}`, 'var(--error)'); }
+            }
+        };
+    },
+    destroy: () => {}
+};