feat: recipe durability guard — prevents build system from deleting local recipes

Add guard-recipes.sh with four modes:
- --verify: check all local/recipes have correct symlinks into recipes/
- --fix: repair broken symlinks (run before builds)
- --save-all: snapshot all recipe.toml into local/recipes/
- --restore: recreate all symlinks from local/recipes/ (run after sync-upstream)

Wired into apply-patches.sh (post-patch) and sync-upstream.sh (post-sync).
This prevents the build system from deleting recipe files during
cargo cook, make distclean, or upstream source refresh.

local/recipes/system/redbear-hwutils/source/src/bin/cmdline.rs

@@ -0,0 +1,39 @@
+use std::env;
+use std::fs;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    // Read /scheme/sys/env for cmdline parameters
+    let env_data = match fs::read_to_string("/scheme/sys/env") {
+        Ok(d) => d,
+        Err(_) => {
+            // Fallback: read process environment
+            let vars: Vec<String> = env::vars()
+                .filter(|(k, _)| k.starts_with("CMDLINE_"))
+                .map(|(k, v)| format!("{}={}", k.trim_start_matches("CMDLINE_"), v))
+                .collect();
+            if vars.is_empty() {
+                eprintln!("cmdline: no parameters found");
+                return;
+            }
+            vars.join("\n")
+        }
+    };
+
+    if args.len() >= 3 && args[1] == "--get" {
+        let key = &args[2];
+        for line in env_data.lines() {
+            if let Some((k, v)) = line.split_once('=') {
+                if k == key {
+                    println!("{}", v);
+                    return;
+                }
+            }
+        }
+        eprintln!("cmdline: {} not found", key);
+        std::process::exit(1);
+    }
+
+    println!("{}", env_data);
+}

local/recipes/system/redbear-hwutils/source/src/bin/lspci.rs

@@ -104,6 +104,28 @@ fn lookup_quirks(
     lookup_pci_quirks(&info)
 }
 
+fn resolve_driver_params(loc: &str) -> Option<HashMap<String, String>> {
+    let base = format!("/tmp/redbear-driver-params/{}", loc);
+    let dir = std::fs::read_dir(&base).ok()?;
+    let mut params = HashMap::new();
+    for entry in dir.flatten() {
+        let name = match entry.file_name().into_string() {
+            Ok(n) => n,
+            Err(_) => continue,
+        };
+        let value = match std::fs::read_to_string(entry.path()) {
+            Ok(v) => v,
+            Err(_) => continue,
+        };
+        params.insert(name, value.trim().to_string());
+    }
+    if params.is_empty() {
+        None
+    } else {
+        Some(params)
+    }
+}
+
 fn collect_runtime_irq_modes() -> HashMap<String, String> {
     let mut modes = HashMap::new();
     for dir in [
@@ -188,6 +210,13 @@ fn run() -> Result<(), String> {
         if let Some(mode) = runtime_modes.get(&loc_key) {
             print!(" runtime-mode: {mode}");
         }
+        if let Some(params) = resolve_driver_params(&loc_key) {
+            let param_str: Vec<String> = params
+                .iter()
+                .map(|(k, v)| format!("{}={}", k, v))
+                .collect();
+            print!(" driver-params: {}", param_str.join(" "));
+        }
         println!();
     }