feat: centralize tool display metadata

apps/shared/ClawdisKit/Sources/ClawdisKit/ToolDisplay.swift

@@ -0,0 +1,194 @@
+import Foundation
+
+public struct ToolDisplaySummary: Sendable, Equatable {
+    public let name: String
+    public let emoji: String
+    public let title: String
+    public let label: String
+    public let verb: String?
+    public let detail: String?
+
+    public var detailLine: String? {
+        var parts: [String] = []
+        if let verb, !verb.isEmpty { parts.append(verb) }
+        if let detail, !detail.isEmpty { parts.append(detail) }
+        return parts.isEmpty ? nil : parts.joined(separator: " · ")
+    }
+
+    public var summaryLine: String {
+        if let detailLine {
+            return "\(emoji) \(label): \(detailLine)"
+        }
+        return "\(emoji) \(label)"
+    }
+}
+
+public enum ToolDisplayRegistry {
+    private struct ToolDisplayActionSpec: Decodable {
+        let label: String?
+        let detailKeys: [String]?
+    }
+
+    private struct ToolDisplaySpec: Decodable {
+        let emoji: String?
+        let title: String?
+        let label: String?
+        let detailKeys: [String]?
+        let actions: [String: ToolDisplayActionSpec]?
+    }
+
+    private struct ToolDisplayConfig: Decodable {
+        let version: Int?
+        let fallback: ToolDisplaySpec?
+        let tools: [String: ToolDisplaySpec]?
+    }
+
+    private static let config: ToolDisplayConfig = loadConfig()
+
+    public static func resolve(name: String?, args: AnyCodable?, meta: String? = nil) -> ToolDisplaySummary {
+        let trimmedName = name?.trimmingCharacters(in: .whitespacesAndNewlines) ?? "tool"
+        let key = trimmedName.lowercased()
+        let spec = config.tools?[key]
+        let fallback = config.fallback
+
+        let emoji = spec?.emoji ?? fallback?.emoji ?? "🧩"
+        let title = spec?.title ?? titleFromName(trimmedName)
+        let label = spec?.label ?? trimmedName
+
+        let actionRaw = valueForKeyPath(args, path: "action") as? String
+        let action = actionRaw?.trimmingCharacters(in: .whitespacesAndNewlines)
+        let actionSpec = action.flatMap { spec?.actions?[$0] }
+        let verb = normalizeVerb(actionSpec?.label ?? action)
+
+        var detail: String?
+        if key == "read" {
+            detail = readDetail(args)
+        } else if key == "write" || key == "edit" || key == "attach" {
+            detail = pathDetail(args)
+        }
+
+        let detailKeys = actionSpec?.detailKeys ?? spec?.detailKeys ?? fallback?.detailKeys ?? []
+        if detail == nil {
+            detail = firstValue(args, keys: detailKeys)
+        }
+
+        if detail == nil {
+            detail = meta
+        }
+
+        if let detailValue = detail {
+            detail = shortenHomeInString(detailValue)
+        }
+
+        return ToolDisplaySummary(
+            name: trimmedName,
+            emoji: emoji,
+            title: title,
+            label: label,
+            verb: verb,
+            detail: detail)
+    }
+
+    private static func loadConfig() -> ToolDisplayConfig {
+        guard let url = ClawdisKitResources.bundle.url(forResource: "tool-display", withExtension: "json") else {
+            return ToolDisplayConfig(version: nil, fallback: nil, tools: nil)
+        }
+        do {
+            let data = try Data(contentsOf: url)
+            return try JSONDecoder().decode(ToolDisplayConfig.self, from: data)
+        } catch {
+            return ToolDisplayConfig(version: nil, fallback: nil, tools: nil)
+        }
+    }
+
+    private static func titleFromName(_ name: String) -> String {
+        let cleaned = name.replacingOccurrences(of: "_", with: " ").trimmingCharacters(in: .whitespaces)
+        guard !cleaned.isEmpty else { return "Tool" }
+        return cleaned
+            .split(separator: " ")
+            .map { part in
+                let upper = part.uppercased()
+                if part.count <= 2 && part == upper { return String(part) }
+                return String(upper.prefix(1)) + String(part.lowercased().dropFirst())
+            }
+            .joined(separator: " ")
+    }
+
+    private static func normalizeVerb(_ value: String?) -> String? {
+        let trimmed = value?.trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
+        guard !trimmed.isEmpty else { return nil }
+        return trimmed.replacingOccurrences(of: "_", with: " ")
+    }
+
+    private static func readDetail(_ args: AnyCodable?) -> String? {
+        guard let path = valueForKeyPath(args, path: "path") as? String else { return nil }
+        let offset = valueForKeyPath(args, path: "offset") as? Double
+        let limit = valueForKeyPath(args, path: "limit") as? Double
+        if let offset, let limit {
+            let end = offset + limit
+            return "\(path):\(Int(offset))-\(Int(end))"
+        }
+        return path
+    }
+
+    private static func pathDetail(_ args: AnyCodable?) -> String? {
+        return valueForKeyPath(args, path: "path") as? String
+    }
+
+    private static func firstValue(_ args: AnyCodable?, keys: [String]) -> String? {
+        for key in keys {
+            if let value = valueForKeyPath(args, path: key),
+               let rendered = renderValue(value)
+            {
+                return rendered
+            }
+        }
+        return nil
+    }
+
+    private static func renderValue(_ value: Any) -> String? {
+        if let str = value as? String {
+            let trimmed = str.trimmingCharacters(in: .whitespacesAndNewlines)
+            guard !trimmed.isEmpty else { return nil }
+            let first = trimmed.split(whereSeparator: \.isNewline).first.map(String.init) ?? trimmed
+            if first.count > 160 { return String(first.prefix(157)) + "…" }
+            return first
+        }
+        if let num = value as? Int { return String(num) }
+        if let num = value as? Double { return String(num) }
+        if let bool = value as? Bool { return bool ? "true" : "false" }
+        if let array = value as? [Any] {
+            let items = array.compactMap { renderValue($0) }
+            guard !items.isEmpty else { return nil }
+            let preview = items.prefix(3).joined(separator: ", ")
+            return items.count > 3 ? "\(preview)…" : preview
+        }
+        if let dict = value as? [String: Any] {
+            if let label = dict["name"].flatMap({ renderValue($0) }) { return label }
+            if let label = dict["id"].flatMap({ renderValue($0) }) { return label }
+        }
+        return nil
+    }
+
+    private static func valueForKeyPath(_ args: AnyCodable?, path: String) -> Any? {
+        guard let args else { return nil }
+        let parts = path.split(separator: ".").map(String.init)
+        var current: Any? = args.value
+        for part in parts {
+            if let dict = current as? [String: AnyCodable] {
+                current = dict[part]?.value
+            } else if let dict = current as? [String: Any] {
+                current = dict[part]
+            } else {
+                return nil
+            }
+        }
+        return current
+    }
+
+    private static func shortenHomeInString(_ value: String) -> String {
+        let home = NSHomeDirectory()
+        guard !home.isEmpty else { return value }
+        return value.replacingOccurrences(of: home, with: "~")
+    }
+}