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{
"id": "02-architecture",
"title": "Architecture without the mystery",
"icon": "🏗",
"level": "beginner",
"lessons": [
{
"id": "2.1",
"title": "Terminal, modules, commands",
"objective": "See how the terminal, module manager and command registry fit together.",
"minutes": 9,
"commands": [
"modules",
"status",
"help"
],
"blocks": [
{
"type": "text",
"text": "`terminal.js` parses input and dispatches a command to the module that registered it. Each module owns a `commands` map and contributes help strings."
},
{
"type": "cmd",
"text": "modules"
},
{
"type": "text",
"text": "The module manager lists every loaded module and its command count."
},
{
"type": "cmd",
"text": "status"
},
{
"type": "text",
"text": "`status` shows files, modules and network state in one place."
},
{
"type": "cmd",
"text": "check"
},
{
"type": "tip",
"text": "A command that exists in `help` but fails at runtime usually has an unmet module requirement that `check` reports."
}
],
"exercise": {
"instruction": "List the loaded modules.",
"accept": [
"modules",
"status"
],
"check": {
"type": "command"
},
"hint": "Type: modules"
},
"quiz": {
"q": "Who executes a command after you press Enter?",
"options": [
"nginx",
"the module that registered it",
"the browser cache"
],
"answer": 1
},
"sources": [
"modules/core/terminal.js",
"modules/core/module-manager.js",
"modules/core/module-system.js"
]
},
{
"id": "2.2",
"title": "VFS and the three loading tiers",
"objective": "Understand where files live and why a module edit sometimes needs a rebuild and sometimes does not.",
"minutes": 10,
"commands": [
"status",
"help",
"load-local"
],
"blocks": [
{
"type": "text",
"text": "Files live in `virtual-fs.js` (in-memory + localStorage persistence). Directories are nodes; `readFile()` returns `null` for a missing path."
},
{
"type": "text",
"text": "Modules ship in three tiers:"
},
{
"type": "table",
"text": "core-bundle.js — core modules (requires rebuild) | critical-ext-bundle.js — editor, shell, alias, finder, filemgr, diff, busybox (requires rebuild) | individually loaded ext modules — cache-busted by LATEST_VER (no rebuild)"
},
{
"type": "cmd",
"text": "status"
},
{
"type": "warn",
"text": "Individually loaded modules are cached with `?v=<webx11_cache_ver>`. Without bumping `LATEST_VER`, users keep the old file."
}
],
"exercise": {
"instruction": "Run `status` and find the VFS size line.",
"accept": [
"status"
],
"check": {
"type": "command"
},
"hint": "Type: status"
},
"quiz": {
"q": "Which tier needs `rebuild-bundles.py` after an edit?",
"options": [
"core-bundle.js",
"webdav.js",
"course.js"
],
"answer": 0
},
"sources": [
"modules/core/virtual-fs.js",
"modules/core/module-loader.js",
"scripts/rebuild-bundles.py"
]
}
]
}
|
