Applying additional cache fixes

app/src/ai/prompt_builder/context.rs

@@ -0,0 +1,48 @@
+//! Environment context that gets injected into system prompts.
+
+/// Environment context about the user's machine and project.
+#[derive(Debug, Clone, Default)]
+pub struct PromptContext {
+    pub working_dir: String,
+    pub home_dir: String,
+    pub os: String,
+    pub shell: String,
+    pub git_branch: String,
+    pub current_time: String,
+}
+
+impl PromptContext {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn with_working_dir(mut self, dir: impl Into<String>) -> Self {
+        self.working_dir = dir.into();
+        self
+    }
+
+    pub fn with_home_dir(mut self, dir: impl Into<String>) -> Self {
+        self.home_dir = dir.into();
+        self
+    }
+
+    pub fn with_os(mut self, os: impl Into<String>) -> Self {
+        self.os = os.into();
+        self
+    }
+
+    pub fn with_shell(mut self, shell: impl Into<String>) -> Self {
+        self.shell = shell.into();
+        self
+    }
+
+    pub fn with_git_branch(mut self, branch: impl Into<String>) -> Self {
+        self.git_branch = branch.into();
+        self
+    }
+
+    pub fn with_current_time(mut self, time: impl Into<String>) -> Self {
+        self.current_time = time.into();
+        self
+    }
+}