WIP: stage all uncommitted work — sprints 46-221, graduation headers, specialist fleet, test steps 909-1988

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

example_projects/rust_metrics_agent/PROJECT_META.md

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+# rust_metrics_agent
+
+- stack: rust
+- validator: cargo test
+- common_failure_modes: parse failures, error propagation, type mismatch
+
+## Scope
+
+Small representative project for training data generation.

example_projects/rust_metrics_agent/TASKS.md

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+# Task Seeds: rust_metrics_agent
+
+src/main.rs
+
+## Validator
+
+`cargo test`

example_projects/rust_metrics_agent/src/main.rs

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+fn parse_metric(line: &str) -> Option<(&str, i64)> {
+    let parts: Vec<&str> = line.split('=').collect();
+    if parts.len() != 2 {
+        return None;
+    }
+    let value = parts[1].parse::<i64>().ok()?;
+    Some((parts[0], value))
+}
+
+fn main() {
+    let _ = parse_metric("requests=10");
+}