Add Overworld tile search command and enhance related documentation

- Implemented `overworld-find-tile` command in the agent for searching tiles by ID.
- Updated `README.md` and `AGENT-ROADMAP.md` to reflect new command and usage.
- Enhanced `overworld_inspect` module with tile matching functionality.

docs/z3ed/AGENT-ROADMAP.md

@@ -59,34 +59,30 @@ This vision will be realized through a shared interface available in both the `z
 
 ### Immediate Priorities
 1.  **Expand Overworld Tool Coverage**:
-    - Add read-only commands for tile searches, area summaries, and teleport destinations.
-    - Guarantee each tool returns both JSON and human-readable summaries for the chat renderers.
-2.  **Document & Test the New Tooling**:
-    - Update the main `README.md` and relevant docs to cover the new chat formatting.
-    - Add regression tests (unit or golden JSON fixtures) for the new Overworld tools.
-
-3.  **Polish the TUI Chat Experience**:
+    - ✅ Ship read-only tile searches (`overworld find-tile`) with shared formatting for CLI and agent calls.
+    - Next: add area summaries, teleport destination lookups, and keep JSON/Text parity for all new tools.
+2.  **Polish the TUI Chat Experience**:
     - Tighten keyboard shortcuts, scrolling, and copy-to-clipboard behaviour.
     - Align log file output with on-screen formatting for easier debugging.
-4.  **Integrate Tool Use with LLM**:
+3.  **Integrate Tool Use with LLM**:
     - Modify the `AIService` to support function calling/tool use.
     - Teach the agent to call the new read-only commands to answer questions.
-5.  **Land Overworld Tooling**:
-    - Ship at least two Overworld inspection commands with comprehensive tests.
-
-6.  **Build GUI Chat Widget**:
+4.  **Document & Test the New Tooling**:
+    - Update the main `README.md` and relevant docs to cover the new chat formatting.
+    - Add regression tests (unit or golden JSON fixtures) for the new Overworld tools.
+5.  **Build GUI Chat Widget**:
     - Create the ImGui component.
     - Ensure it shares the same backend service as the TUI.
-7.  **Full Integration with Proposal System**:
+6.  **Full Integration with Proposal System**:
     - Implement the logic for the agent to transition from conversation to proposal generation.
-8.  **Expand Tool Arsenal**:
+7.  **Expand Tool Arsenal**:
     - Continuously add new read-only commands to give the agent more capabilities to inspect the ROM.
-9.  **Multi-Modal Agent**:
+8.  **Multi-Modal Agent**:
     - Explore the possibility of the agent generating and displaying images (e.g., a map of a dungeon room) in the chat.
-10.  **Advanced Configuration**:
+9.  **Advanced Configuration**:
     - Implement environment variables for selecting AI providers and models (e.g., `YAZE_AI_PROVIDER`, `OLLAMA_MODEL`).
     - Add CLI flags for overriding the provider and model on a per-command basis.
-11.  **Performance and Cost-Saving**:
+10.  **Performance and Cost-Saving**:
     - Implement a response cache to reduce latency and API costs.
     - Add token usage tracking and reporting.
 
@@ -103,10 +99,13 @@ We have made significant progress in laying the foundation for the conversationa
  - **Tool Loop Improvements**: Conversational flow now handles multi-step tool calls with default JSON output, allowing results to feed back into the chat without recursion.
 - **Structured Tool Output Rendering**: Both the TUI and GUI chat widgets now display tables and JSON payloads with friendly formatting, drastically improving readability.
 - **Overworld Inspection Suite**: Added `overworld describe-map` and `overworld list-warps` commands producing text/JSON summaries for map metadata and warp points, with agent tooling hooks.
-
-### ✅ Build Configuration Issue Resolved
-The linker error is fixed. Both the CLI and GUI targets now link against `yaze_agent`, so the shared agent handlers (`HandleResourceListCommand`, `HandleDungeonListSpritesCommand`, etc.) compile once and are available to `ToolDispatcher` everywhere.
+- **Overworld Tile Search Tool**: Added `overworld find-tile` across CLI and agent tooling with shared ROM context handling and regression tests.
 
 ### 🚀 Next Steps
-1.  **Share ROM Context with the Agent**: Inject the active GUI ROM into `ConversationalAgentService` so tool calls work even when `--rom` flags are unavailable. Analyze the `src/app/rom.cc` and `src/app/rom.h` and `src/app/editor/editor_manager.cc` files for guidance on accessing the current project/ROM.
-2.  **Expand Tool Coverage**: Target Overworld navigation helpers (`overworld find-tile`, `overworld list-warps`, region summaries) and dialogue inspectors. Prioritize commands that unblock common level-design questions and emit concise table/JSON payloads.
+1.  **Integrate Tool Use with LLM**:
+    - Modify the `AIService` to support function calling/tool use.
+    - Teach the agent to call the new read-only commands to answer questions.
+2.  **Polish the TUI Chat Experience**:
+    - Tighten keyboard shortcuts, scrolling, and copy-to-clipboard behaviour.
+    - Align log file output with on-screen formatting for easier debugging.
+2.  **Expand Tool Coverage**: Target additional Overworld navigation helpers (region summaries, teleport lookups) and dialogue inspectors. Prioritize commands that unblock common level-design questions and emit concise table/JSON payloads.

docs/z3ed/README.md

@@ -54,6 +54,9 @@ z3ed agent resource-list --type dungeon --format json
 
 # Dump sprite placements for a dungeon room
 z3ed agent dungeon-list-sprites --room 0x012
+
+# Search overworld maps for a tile ID using shared agent tooling
+z3ed agent overworld-find-tile --tile 0x02E --map 0x05
 ```
 
 ### GUI Testing Commands
@@ -201,6 +204,9 @@ z3ed overworld find-tile --tile 0x02E --format json
 
 # Narrow search to Light World map 0x05
 z3ed overworld find-tile --tile 0x02E --map 0x05
+
+# Ask the agent to perform the same lookup (returns JSON by default)
+z3ed agent overworld-find-tile --tile 0x02E --map 0x05
 ```
 
 ### Label-Aware Dungeon Edit

src/cli/handlers/agent.cc

@@ -12,7 +12,7 @@ namespace agent {
 namespace {
 
 constexpr absl::string_view kUsage =
-  "Usage: agent <run|plan|diff|accept|test|gui|learn|list|commit|revert|describe|resource-list|dungeon-list-sprites|chat> "
+  "Usage: agent <run|plan|diff|accept|test|gui|learn|list|commit|revert|describe|resource-list|dungeon-list-sprites|overworld-find-tile|overworld-describe-map|overworld-list-warps|chat> "
   "[options]";
 
 }  // namespace
@@ -65,6 +65,15 @@ absl::Status Agent::Run(const std::vector<std::string>& arg_vec) {
   if (subcommand == "dungeon-list-sprites") {
     return agent::HandleDungeonListSpritesCommand(subcommand_args);
   }
+  if (subcommand == "overworld-find-tile") {
+    return agent::HandleOverworldFindTileCommand(subcommand_args);
+  }
+  if (subcommand == "overworld-describe-map") {
+    return agent::HandleOverworldDescribeMapCommand(subcommand_args);
+  }
+  if (subcommand == "overworld-list-warps") {
+    return agent::HandleOverworldListWarpsCommand(subcommand_args);
+  }
   if (subcommand == "chat") {
     return agent::HandleChatCommand(rom_);
   }

src/cli/handlers/agent/commands.h

@@ -31,6 +31,9 @@ absl::Status HandleResourceListCommand(
 absl::Status HandleDungeonListSpritesCommand(
 	const std::vector<std::string>& arg_vec,
 	Rom* rom_context = nullptr);
+absl::Status HandleOverworldFindTileCommand(
+	const std::vector<std::string>& arg_vec,
+	Rom* rom_context = nullptr);
 absl::Status HandleOverworldDescribeMapCommand(
 	const std::vector<std::string>& arg_vec,
 	Rom* rom_context = nullptr);

src/cli/handlers/agent/tool_commands.cc

@@ -209,6 +209,174 @@ absl::Status HandleDungeonListSpritesCommand(
   return absl::OkStatus();
 }
 
+absl::Status HandleOverworldFindTileCommand(
+  const std::vector<std::string>& arg_vec, Rom* rom_context) {
+  std::optional<std::string> tile_value;
+  std::optional<std::string> map_value;
+  std::optional<std::string> world_value;
+  std::string format = "json";
+  std::optional<std::string> rom_override;
+
+  for (size_t i = 0; i < arg_vec.size(); ++i) {
+    const std::string& token = arg_vec[i];
+    if (token == "--tile") {
+      if (i + 1 >= arg_vec.size()) {
+        return absl::InvalidArgumentError("--tile requires a value.");
+      }
+      tile_value = arg_vec[++i];
+    } else if (absl::StartsWith(token, "--tile=")) {
+      tile_value = token.substr(7);
+    } else if (token == "--map") {
+      if (i + 1 >= arg_vec.size()) {
+        return absl::InvalidArgumentError("--map requires a value.");
+      }
+      map_value = arg_vec[++i];
+    } else if (absl::StartsWith(token, "--map=")) {
+      map_value = token.substr(6);
+    } else if (token == "--world") {
+      if (i + 1 >= arg_vec.size()) {
+        return absl::InvalidArgumentError("--world requires a value.");
+      }
+      world_value = arg_vec[++i];
+    } else if (absl::StartsWith(token, "--world=")) {
+      world_value = token.substr(8);
+    } else if (token == "--format") {
+      if (i + 1 >= arg_vec.size()) {
+        return absl::InvalidArgumentError("--format requires a value.");
+      }
+      format = absl::AsciiStrToLower(arg_vec[++i]);
+    } else if (absl::StartsWith(token, "--format=")) {
+      format = absl::AsciiStrToLower(token.substr(9));
+    } else if (token == "--rom") {
+      if (i + 1 >= arg_vec.size()) {
+        return absl::InvalidArgumentError("--rom requires a value.");
+      }
+      rom_override = arg_vec[++i];
+    } else if (absl::StartsWith(token, "--rom=")) {
+      rom_override = token.substr(6);
+    }
+  }
+
+  if (!tile_value.has_value()) {
+    return absl::InvalidArgumentError(
+        "Usage: agent overworld-find-tile --tile <id> [--map <id>] [--world <light|dark|special>] [--format <json|text>]");
+  }
+
+  ASSIGN_OR_RETURN(int tile_numeric,
+                   overworld::ParseNumeric(*tile_value));
+  if (tile_numeric < 0 || tile_numeric > 0xFFFF) {
+    return absl::InvalidArgumentError(
+        absl::StrCat("Tile ID must be between 0x0000 and 0xFFFF (got ",
+                      *tile_value, ")"));
+  }
+
+  std::optional<int> map_filter;
+  if (map_value.has_value()) {
+    ASSIGN_OR_RETURN(int parsed_map,
+                     overworld::ParseNumeric(*map_value));
+    if (parsed_map < 0 || parsed_map >= zelda3::kNumOverworldMaps) {
+      return absl::InvalidArgumentError(
+          absl::StrCat("Map ID out of range: ", *map_value));
+    }
+    map_filter = parsed_map;
+  }
+
+  std::optional<int> world_filter;
+  if (world_value.has_value()) {
+    ASSIGN_OR_RETURN(int parsed_world,
+                     overworld::ParseWorldSpecifier(*world_value));
+    world_filter = parsed_world;
+  }
+
+  if (map_filter.has_value()) {
+    ASSIGN_OR_RETURN(int inferred_world,
+                     overworld::InferWorldFromMapId(*map_filter));
+    if (world_filter.has_value() && inferred_world != *world_filter) {
+      return absl::InvalidArgumentError(
+          absl::StrCat("Map 0x",
+                       absl::StrFormat("%02X", *map_filter),
+                       " belongs to the ",
+                       overworld::WorldName(inferred_world),
+                       " World but --world requested ",
+                       overworld::WorldName(*world_filter)));
+    }
+    if (!world_filter.has_value()) {
+      world_filter = inferred_world;
+    }
+  }
+
+  if (format != "json" && format != "text") {
+    return absl::InvalidArgumentError(
+        absl::StrCat("Unsupported format: ", format));
+  }
+
+  Rom rom_storage;
+  Rom* rom = nullptr;
+  if (rom_context != nullptr && rom_context->is_loaded() && !rom_override.has_value()) {
+    rom = rom_context;
+  } else {
+    ASSIGN_OR_RETURN(auto rom_or,
+                     LoadRomFromPathOrFlag(rom_override));
+    rom_storage = std::move(rom_or);
+    rom = &rom_storage;
+  }
+
+  zelda3::Overworld overworld_data(rom);
+  auto load_status = overworld_data.Load(rom);
+  if (!load_status.ok()) {
+    return load_status;
+  }
+
+  overworld::TileSearchOptions search_options;
+  search_options.map_id = map_filter;
+  search_options.world = world_filter;
+
+  ASSIGN_OR_RETURN(auto matches,
+                   overworld::FindTileMatches(overworld_data,
+                                              static_cast<uint16_t>(tile_numeric),
+                                              search_options));
+
+  if (format == "json") {
+    std::cout << "{\n";
+    std::cout << absl::StrFormat(
+        "  \"tile\": \"0x%04X\",\n", tile_numeric);
+    std::cout << absl::StrFormat(
+        "  \"match_count\": %zu,\n", matches.size());
+    std::cout << "  \"matches\": [\n";
+    for (size_t i = 0; i < matches.size(); ++i) {
+      const auto& match = matches[i];
+      std::cout << absl::StrFormat(
+          "    {\"map\": \"0x%02X\", \"world\": \"%s\", "
+          "\"local\": {\"x\": %d, \"y\": %d}, "
+          "\"global\": {\"x\": %d, \"y\": %d}}%s\n",
+          match.map_id, overworld::WorldName(match.world), match.local_x,
+          match.local_y,
+          match.global_x, match.global_y,
+          (i + 1 == matches.size()) ? "" : ",");
+    }
+    std::cout << "  ]\n";
+    std::cout << "}\n";
+  } else {
+    std::cout << absl::StrFormat(
+        "🔎 Tile 0x%04X → %zu match(es)\n",
+        tile_numeric, matches.size());
+    if (matches.empty()) {
+      std::cout << "  No matches found." << std::endl;
+      return absl::OkStatus();
+    }
+
+    for (const auto& match : matches) {
+      std::cout << absl::StrFormat(
+          "  • Map 0x%02X (%s World) local(%2d,%2d) global(%3d,%3d)\n",
+          match.map_id, overworld::WorldName(match.world), match.local_x,
+          match.local_y,
+          match.global_x, match.global_y);
+    }
+  }
+
+  return absl::OkStatus();
+}
+
 absl::Status HandleOverworldDescribeMapCommand(
   const std::vector<std::string>& arg_vec, Rom* rom_context) {
   std::optional<std::string> map_value;

src/cli/handlers/overworld.cc

@@ -244,73 +244,13 @@ absl::Status OverworldFindTile::Run(const std::vector<std::string>& arg_vec) {
     return ow_status;
   }
 
-  struct TileMatch {
-    int map_id;
-    int world;
-    int local_x;
-    int local_y;
-    int global_x;
-    int global_y;
-  };
+  overworld::TileSearchOptions search_options;
+  search_options.map_id = map_filter;
+  search_options.world = world_filter;
 
-  std::vector<int> worlds_to_search;
-  if (world_filter.has_value()) {
-    worlds_to_search.push_back(*world_filter);
-  } else {
-    worlds_to_search = {0, 1, 2};
-  }
-
-  std::vector<TileMatch> matches;
-
-  for (int world : worlds_to_search) {
-    int world_start = 0;
-    int world_maps = 0;
-    switch (world) {
-      case 0:
-        world_start = 0x00;
-        world_maps = 0x40;
-        break;
-      case 1:
-        world_start = 0x40;
-        world_maps = 0x40;
-        break;
-      case 2:
-        world_start = 0x80;
-        world_maps = 0x20;
-        break;
-      default:
-        return absl::InvalidArgumentError(
-            absl::StrCat("Unknown world index: ", world));
-    }
-
-    overworld.set_current_world(world);
-
-    for (int local_map = 0; local_map < world_maps; ++local_map) {
-      int map_id = world_start + local_map;
-      if (map_filter.has_value() && map_id != *map_filter) {
-        continue;
-      }
-
-      int map_x_index = local_map % 8;
-      int map_y_index = local_map / 8;
-
-      int global_x_start = map_x_index * 32;
-      int global_y_start = map_y_index * 32;
-
-      for (int local_y = 0; local_y < 32; ++local_y) {
-        for (int local_x = 0; local_x < 32; ++local_x) {
-          int global_x = global_x_start + local_x;
-          int global_y = global_y_start + local_y;
-
-          uint16_t tile = overworld.GetTile(global_x, global_y);
-          if (tile == tile_id) {
-            matches.push_back({map_id, world, local_x, local_y, global_x,
-                              global_y});
-          }
-        }
-      }
-    }
-  }
+  ASSIGN_OR_RETURN(auto matches,
+                   overworld::FindTileMatches(overworld, tile_id,
+                                              search_options));
 
   if (format == "json") {
     std::cout << "{\n";

src/cli/handlers/overworld_inspect.cc

@@ -295,6 +295,97 @@ absl::StatusOr<std::vector<WarpEntry>> CollectWarpEntries(
   return entries;
 }
 
+absl::StatusOr<std::vector<TileMatch>> FindTileMatches(
+    zelda3::Overworld& overworld, uint16_t tile_id,
+    const TileSearchOptions& options) {
+  if (options.map_id.has_value()) {
+    RETURN_IF_ERROR(ValidateMapId(*options.map_id));
+  }
+  if (options.world.has_value()) {
+    if (*options.world < 0 || *options.world > 2) {
+      return absl::InvalidArgumentError(
+          absl::StrFormat("Unknown world index: %d", *options.world));
+    }
+  }
+
+  if (options.map_id.has_value() && options.world.has_value()) {
+    ASSIGN_OR_RETURN(int inferred_world,
+                     InferWorldFromMapId(*options.map_id));
+    if (inferred_world != *options.world) {
+      return absl::InvalidArgumentError(
+          absl::StrFormat(
+              "Map 0x%02X belongs to the %s World but --world requested %s",
+              *options.map_id, WorldName(inferred_world),
+              WorldName(*options.world)));
+    }
+  }
+
+  std::vector<int> worlds;
+  if (options.world.has_value()) {
+    worlds.push_back(*options.world);
+  } else if (options.map_id.has_value()) {
+    ASSIGN_OR_RETURN(int inferred_world,
+                     InferWorldFromMapId(*options.map_id));
+    worlds.push_back(inferred_world);
+  } else {
+    worlds = {0, 1, 2};
+  }
+
+  std::vector<TileMatch> matches;
+
+  for (int world : worlds) {
+    int world_start = 0;
+    int world_maps = 0;
+    switch (world) {
+      case 0:
+        world_start = 0x00;
+        world_maps = 0x40;
+        break;
+      case 1:
+        world_start = 0x40;
+        world_maps = 0x40;
+        break;
+      case 2:
+        world_start = 0x80;
+        world_maps = 0x20;
+        break;
+      default:
+        return absl::InvalidArgumentError(
+            absl::StrFormat("Unknown world index: %d", world));
+    }
+
+    overworld.set_current_world(world);
+
+    for (int local_map = 0; local_map < world_maps; ++local_map) {
+      int map_id = world_start + local_map;
+      if (options.map_id.has_value() && map_id != *options.map_id) {
+        continue;
+      }
+
+      int map_x_index = local_map % 8;
+      int map_y_index = local_map / 8;
+
+      int global_x_start = map_x_index * 32;
+      int global_y_start = map_y_index * 32;
+
+      for (int local_y = 0; local_y < 32; ++local_y) {
+        for (int local_x = 0; local_x < 32; ++local_x) {
+          int global_x = global_x_start + local_x;
+          int global_y = global_y_start + local_y;
+
+          uint16_t current_tile = overworld.GetTile(global_x, global_y);
+          if (current_tile == tile_id) {
+            matches.push_back({map_id, world, local_x, local_y, global_x,
+                               global_y});
+          }
+        }
+      }
+    }
+  }
+
+  return matches;
+}
+
 }  // namespace overworld
 }  // namespace cli
 }  // namespace yaze

src/cli/handlers/overworld_inspect.h

@@ -81,6 +81,20 @@ struct WarpQuery {
   std::optional<WarpType> type;
 };
 
+struct TileMatch {
+  int map_id;
+  int world;
+  int local_x;
+  int local_y;
+  int global_x;
+  int global_y;
+};
+
+struct TileSearchOptions {
+  std::optional<int> map_id;
+  std::optional<int> world;
+};
+
 absl::StatusOr<int> ParseNumeric(std::string_view value, int base = 0);
 absl::StatusOr<int> ParseWorldSpecifier(std::string_view value);
 absl::StatusOr<int> InferWorldFromMapId(int map_id);
@@ -93,6 +107,10 @@ absl::StatusOr<MapSummary> BuildMapSummary(zelda3::Overworld& overworld,
 absl::StatusOr<std::vector<WarpEntry>> CollectWarpEntries(
   const zelda3::Overworld& overworld, const WarpQuery& query);
 
+absl::StatusOr<std::vector<TileMatch>> FindTileMatches(
+    zelda3::Overworld& overworld, uint16_t tile_id,
+    const TileSearchOptions& options = {});
+
 }  // namespace overworld
 }  // namespace cli
 }  // namespace yaze

src/cli/service/agent/tool_dispatcher.cc

@@ -38,6 +38,8 @@ absl::StatusOr<std::string> ToolDispatcher::Dispatch(
     status = HandleResourceListCommand(args, rom_context_);
   } else if (tool_call.tool_name == "dungeon-list-sprites") {
     status = HandleDungeonListSpritesCommand(args, rom_context_);
+  } else if (tool_call.tool_name == "overworld-find-tile") {
+    status = HandleOverworldFindTileCommand(args, rom_context_);
   } else if (tool_call.tool_name == "overworld-describe-map") {
     status = HandleOverworldDescribeMapCommand(args, rom_context_);
   } else if (tool_call.tool_name == "overworld-list-warps") {