feat(knowledge): implement pattern filtering and settings integration (TI-3, TI-5)

- Add pattern filtering foundation with --include/--exclude CLI flags (TI-3)
- Implement knowledge settings integration with database system (TI-5)
- Add comprehensive pattern filter module with glob-style support
- Enhance file processor with async pattern filtering capabilities
- Add extensive test coverage for pattern filtering functionality
- Update knowledge CLI with improved error handling and validation
- Add settings support for chunk size, overlap, and file limits

Author: kennvene-aws

Cargo.lock

@@ -124,7 +124,9 @@ impl Knowledge {
             Knowledge::Update(update) => {
                 // Require at least one identifier (context_id or name)
                 if update.context_id.is_empty() && update.name.is_empty() && update.path.is_empty() {
-                    eyre::bail!("Please provide either context_id or name or path to identify the context to update");
+                    eyre::bail!(
+                        "Please provide either context_id, name, or path to identify the knowledge base entry to update"
+                    );
                 }
 
                 // Validate the path exists
@@ -310,8 +312,10 @@ impl Knowledge {
     }
 
     pub async fn invoke(&self, os: &Os, _updates: &mut impl Write) -> Result<InvokeOutput> {
-        // Get the async knowledge store singleton
-        let async_knowledge_store = KnowledgeStore::get_async_instance().await;
+        // Get the async knowledge store singleton with OS-aware directory
+        let async_knowledge_store = KnowledgeStore::get_async_instance_with_os(os)
+            .await
+            .map_err(|e| eyre::eyre!("Failed to access knowledge base: {}", e))?;
         let mut store = async_knowledge_store.lock().await;
 
         let result = match self {
@@ -325,7 +329,14 @@ impl Knowledge {
                     add.value.clone()
                 };
 
-                match store.add(&add.name, &value_to_use).await {
+                match store
+                    .add(
+                        &add.name,
+                        &value_to_use,
+                        crate::util::knowledge_store::AddOptions::with_db_defaults(os),
+                    )
+                    .await
+                {
                     Ok(context_id) => format!(
                         "Added '{}' to knowledge base with ID: {}. Track active jobs in '/knowledge status' with provided id.",
                         add.name, context_id
@@ -412,23 +423,24 @@ impl Knowledge {
                 .await
                 .unwrap_or_else(|e| format!("Failed to clear knowledge base: {}", e)),
             Knowledge::Search(search) => {
-                // Only use a spinner for search, not a full progress bar
                 let results = store.search(&search.query, search.context_id.as_deref()).await;
                 match results {
                     Ok(results) => {
                         if results.is_empty() {
-                            "No matching entries found in knowledge base".to_string()
+                            format!("No matching entries found for query: \"{}\"", search.query)
                         } else {
-                            let mut output = String::from("Search results:\n");
+                            let mut output = format!("Search results for \"{}\":\n\n", search.query);
                             for result in results {
                                 if let Some(text) = result.text() {
-                                    output.push_str(&format!("- {}\n", text));
+                                    output.push_str(&format!("{}\n\n", text));
                                 }
                             }
                             output
                         }
                     },
-                    Err(e) => format!("Search failed: {}", e),
+                    Err(e) => {
+                        format!("Search failed: {}", e)
+                    },
                 }
             },
             Knowledge::Show => {

crates/chat-cli/src/cli/chat/cli/knowledge.rs

@@ -22,6 +22,11 @@ pub enum Setting {
     ShareCodeWhispererContent,
     EnabledThinking,
     EnabledKnowledge,
+    KnowledgeDefaultIncludePatterns,
+    KnowledgeDefaultExcludePatterns,
+    KnowledgeMaxFiles,
+    KnowledgeChunkSize,
+    KnowledgeChunkOverlap,
     SkimCommandKey,
     ChatGreetingEnabled,
     ApiTimeout,
@@ -47,6 +52,11 @@ impl AsRef<str> for Setting {
             Self::ShareCodeWhispererContent => "codeWhisperer.shareCodeWhispererContentWithAWS",
             Self::EnabledThinking => "chat.enableThinking",
             Self::EnabledKnowledge => "chat.enableKnowledge",
+            Self::KnowledgeDefaultIncludePatterns => "knowledge.defaultIncludePatterns",
+            Self::KnowledgeDefaultExcludePatterns => "knowledge.defaultExcludePatterns",
+            Self::KnowledgeMaxFiles => "knowledge.maxFiles",
+            Self::KnowledgeChunkSize => "knowledge.chunkSize",
+            Self::KnowledgeChunkOverlap => "knowledge.chunkOverlap",
             Self::SkimCommandKey => "chat.skimCommandKey",
             Self::ChatGreetingEnabled => "chat.greeting.enabled",
             Self::ApiTimeout => "api.timeout",
@@ -82,6 +92,11 @@ impl TryFrom<&str> for Setting {
             "codeWhisperer.shareCodeWhispererContentWithAWS" => Ok(Self::ShareCodeWhispererContent),
             "chat.enableThinking" => Ok(Self::EnabledThinking),
             "chat.enableKnowledge" => Ok(Self::EnabledKnowledge),
+            "knowledge.defaultIncludePatterns" => Ok(Self::KnowledgeDefaultIncludePatterns),
+            "knowledge.defaultExcludePatterns" => Ok(Self::KnowledgeDefaultExcludePatterns),
+            "knowledge.maxFiles" => Ok(Self::KnowledgeMaxFiles),
+            "knowledge.chunkSize" => Ok(Self::KnowledgeChunkSize),
+            "knowledge.chunkOverlap" => Ok(Self::KnowledgeChunkOverlap),
             "chat.skimCommandKey" => Ok(Self::SkimCommandKey),
             "chat.greeting.enabled" => Ok(Self::ChatGreetingEnabled),
             "api.timeout" => Ok(Self::ApiTimeout),
@@ -166,6 +181,10 @@ impl Settings {
         self.get(key).and_then(|value| value.as_i64())
     }
 
+    pub fn get_int_or(&self, key: Setting, default: usize) -> usize {
+        self.get_int(key).map_or(default, |v| v as usize)
+    }
+
     pub async fn save_to_file(&self) -> Result<(), DatabaseError> {
         if cfg!(test) {
             return Ok(());

crates/chat-cli/src/cli/chat/tools/knowledge.rs

@@ -185,6 +185,11 @@ pub fn chat_profiles_dir(os: &Os) -> Result<PathBuf> {
     Ok(home_dir(os)?.join(".aws").join("amazonq").join("profiles"))
 }
 
+/// The directory for knowledge base storage
+pub fn knowledge_bases_dir(os: &Os) -> Result<PathBuf> {
+    Ok(home_dir(os)?.join(".aws").join("amazonq").join("knowledge_bases"))
+}
+
 /// The path to the fig settings file
 pub fn settings_path() -> Result<PathBuf> {
     Ok(fig_data_dir()?.join("settings.json"))