Split PR #522 [5/9]: AI agents package

packages/ai-agents/jest.config.js

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+module.exports = {
+    testEnvironment: 'node',
+    testMatch: ['**/tests/**/*.test.js'],
+    collectCoverageFrom: ['src/**/*.js'],
+    coverageDirectory: 'coverage',
+    coverageReporters: ['text', 'lcov'],
+    verbose: true
+};

packages/ai-agents/package.json

@@ -0,0 +1,59 @@
+{
+  "name": "@friggframework/ai-agents",
+  "version": "2.0.0-next.0",
+  "description": "AI agent integration for Frigg Framework",
+  "main": "src/index.js",
+  "author": "",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/friggframework/frigg.git"
+  },
+  "bugs": {
+    "url": "https://github.com/friggframework/frigg/issues"
+  },
+  "homepage": "https://github.com/friggframework/frigg#readme",
+  "publishConfig": {
+    "access": "public"
+  },
+  "scripts": {
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:coverage": "jest --coverage",
+    "lint:fix": "prettier --write --loglevel error . && eslint . --fix"
+  },
+  "keywords": [
+    "frigg",
+    "ai",
+    "agents",
+    "mcp",
+    "llm"
+  ],
+  "dependencies": {
+    "@friggframework/schemas": "^2.0.0-next.0"
+  },
+  "peerDependencies": {
+    "ai": ">=4.0.0",
+    "@ai-sdk/openai": ">=1.0.0",
+    "@anthropic-ai/claude-agent-sdk": ">=0.1.0"
+  },
+  "peerDependenciesMeta": {
+    "ai": {
+      "optional": true
+    },
+    "@ai-sdk/openai": {
+      "optional": true
+    },
+    "@anthropic-ai/claude-agent-sdk": {
+      "optional": true
+    }
+  },
+  "devDependencies": {
+    "@friggframework/eslint-config": "^2.0.0-next.0",
+    "@friggframework/prettier-config": "^2.0.0-next.0",
+    "jest": "^29.7.0",
+    "eslint": "^8.22.0",
+    "prettier": "^2.7.1"
+  },
+  "prettier": "@friggframework/prettier-config"
+}

packages/ai-agents/src/domain/entities/agent-event.js

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+const AgentEventType = {
+    CONTENT: 'content',
+    TOOL_CALL: 'tool_call',
+    TOOL_RESULT: 'tool_result',
+    USAGE: 'usage',
+    DONE: 'done',
+    ERROR: 'error'
+};
+
+class AgentEvent {
+    constructor({ type, timestamp = new Date(), ...data }) {
+        this.type = type;
+        this.timestamp = timestamp;
+        Object.assign(this, data);
+    }
+
+    static content(text) {
+        return new AgentEvent({ type: AgentEventType.CONTENT, content: text });
+    }
+
+    static toolCall(name, args) {
+        return new AgentEvent({ type: AgentEventType.TOOL_CALL, name, args });
+    }
+
+    static toolResult(name, result) {
+        return new AgentEvent({ type: AgentEventType.TOOL_RESULT, name, result });
+    }
+
+    static usage(usage) {
+        return new AgentEvent({ type: AgentEventType.USAGE, usage });
+    }
+
+    static done() {
+        return new AgentEvent({ type: AgentEventType.DONE });
+    }
+
+    static error(error) {
+        return new AgentEvent({ type: AgentEventType.ERROR, error });
+    }
+
+    toJSON() {
+        return {
+            type: this.type,
+            timestamp: this.timestamp.toISOString(),
+            ...(this.content && { content: this.content }),
+            ...(this.name && { name: this.name }),
+            ...(this.args && { args: this.args }),
+            ...(this.result && { result: this.result }),
+            ...(this.usage && { usage: this.usage }),
+            ...(this.error && { error: this.error.message || String(this.error) })
+        };
+    }
+}
+
+module.exports = { AgentEvent, AgentEventType };

packages/ai-agents/src/domain/entities/agent-proposal.js

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+const ProposalStatus = {
+    PENDING: 'pending',
+    APPROVED: 'approved',
+    REJECTED: 'rejected',
+    MODIFIED: 'modified'
+};
+
+class AgentProposal {
+    constructor({ id, files, validation, checkpointId = null }) {
+        this.id = id;
+        this.files = files;
+        this.validation = validation;
+        this.checkpointId = checkpointId;
+        this.status = ProposalStatus.PENDING;
+        this.createdAt = new Date();
+        this.approvedAt = null;
+        this.rejectedAt = null;
+        this.rejectionReason = null;
+    }
+
+    getSummary() {
+        let linesAdded = 0;
+        let createdFiles = 0;
+        let modifiedFiles = 0;
+
+        for (const file of this.files) {
+            if (file.action === 'create') {
+                createdFiles++;
+                if (file.content) {
+                    linesAdded += file.content.split('\n').length;
+                }
+            } else if (file.action === 'modify') {
+                modifiedFiles++;
+            }
+        }
+
+        return {
+            fileCount: this.files.length,
+            createdFiles,
+            modifiedFiles,
+            linesAdded,
+            confidence: this.validation?.confidence,
+            recommendation: this.validation?.recommendation
+        };
+    }
+
+    approve() {
+        if (this.status === ProposalStatus.REJECTED) {
+            throw new Error('Cannot approve rejected proposal');
+        }
+        this.status = ProposalStatus.APPROVED;
+        this.approvedAt = new Date();
+    }
+
+    reject(reason) {
+        this.status = ProposalStatus.REJECTED;
+        this.rejectedAt = new Date();
+        this.rejectionReason = reason;
+    }
+
+    canRollback() {
+        return this.checkpointId !== null;
+    }
+
+    toJSON() {
+        return {
+            id: this.id,
+            status: this.status,
+            files: this.files.map(f => ({ path: f.path, action: f.action })),
+            validation: this.validation,
+            checkpointId: this.checkpointId,
+            summary: this.getSummary(),
+            createdAt: this.createdAt.toISOString(),
+            approvedAt: this.approvedAt?.toISOString(),
+            rejectedAt: this.rejectedAt?.toISOString(),
+            rejectionReason: this.rejectionReason
+        };
+    }
+}
+
+module.exports = { AgentProposal, ProposalStatus };

packages/ai-agents/src/domain/entities/index.js

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+const { AgentEvent, AgentEventType } = require('./agent-event');
+const { AgentProposal, ProposalStatus } = require('./agent-proposal');
+
+module.exports = {
+    AgentEvent,
+    AgentEventType,
+    AgentProposal,
+    ProposalStatus
+};

packages/ai-agents/src/domain/index.js

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+const interfaces = require('./interfaces');
+const entities = require('./entities');
+
+module.exports = {
+    ...interfaces,
+    ...entities
+};

packages/ai-agents/src/domain/interfaces/agent-framework.js

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+class NotImplementedError extends Error {
+    constructor(method) {
+        super(`Not implemented: ${method}`);
+        this.name = 'NotImplementedError';
+    }
+}
+
+class IAgentFramework {
+    async runAgent(_params) {
+        throw new NotImplementedError('runAgent');
+    }
+
+    async loadMcpTools(_serverConfig) {
+        throw new NotImplementedError('loadMcpTools');
+    }
+
+    getCapabilities() {
+        throw new NotImplementedError('getCapabilities');
+    }
+
+    async validateRunParams(params) {
+        if (!params.prompt) {
+            throw new Error('prompt is required');
+        }
+        return true;
+    }
+}
+
+module.exports = { IAgentFramework, NotImplementedError };

packages/ai-agents/src/domain/interfaces/index.js

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+const { IAgentFramework, NotImplementedError } = require('./agent-framework');
+const { IValidationPipeline, WEIGHTS, THRESHOLDS } = require('./validation-pipeline');
+
+module.exports = {
+    IAgentFramework,
+    IValidationPipeline,
+    NotImplementedError,
+    WEIGHTS,
+    THRESHOLDS
+};

packages/ai-agents/src/domain/interfaces/validation-pipeline.js

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+const { NotImplementedError } = require('./agent-framework');
+
+const WEIGHTS = {
+    schema: 0.30,
+    patterns: 0.25,
+    security: 0.15,
+    tests: 0.20,
+    lint: 0.10
+};
+
+const THRESHOLDS = {
+    autoApprove: 95,
+    requireReview: 80
+};
+
+class IValidationPipeline {
+    async validate(_files) {
+        throw new NotImplementedError('validate');
+    }
+
+    calculateConfidence(layerResults) {
+        let totalScore = 0;
+
+        for (const [layer, weight] of Object.entries(WEIGHTS)) {
+            const result = layerResults[layer];
+            if (result && typeof result.score === 'number') {
+                totalScore += result.score * weight;
+            }
+        }
+
+        return Math.round(totalScore);
+    }
+
+    getRecommendation(confidence, thresholds = THRESHOLDS) {
+        if (confidence >= thresholds.autoApprove) {
+            return 'auto_approve';
+        }
+        if (confidence >= thresholds.requireReview) {
+            return 'require_review';
+        }
+        return 'manual_approval';
+    }
+
+    generateFeedback(layerResults) {
+        const feedback = [];
+
+        for (const [layer, result] of Object.entries(layerResults)) {
+            if (!result.passed) {
+                feedback.push({
+                    layer,
+                    score: result.score,
+                    issues: result.errors || result.violations || result.vulnerabilities || result.failures || []
+                });
+            }
+        }
+
+        return feedback;
+    }
+}
+
+module.exports = { IValidationPipeline, WEIGHTS, THRESHOLDS };

packages/ai-agents/src/index.js

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+const { IAgentFramework, NotImplementedError } = require('./domain/interfaces/agent-framework');
+const { IValidationPipeline } = require('./domain/interfaces/validation-pipeline');
+
+const { AgentEvent, AgentEventType } = require('./domain/entities/agent-event');
+const { AgentProposal, ProposalStatus } = require('./domain/entities/agent-proposal');
+
+const { VercelAIAdapter, SUPPORTED_PROVIDERS } = require('./infrastructure/adapters/vercel-ai-adapter');
+const { ClaudeAgentAdapter } = require('./infrastructure/adapters/claude-agent-adapter');
+
+const { ValidationPipeline, ValidationLayer, LAYER_WEIGHTS } = require('./infrastructure/validation/validation-pipeline');
+
+const { createFriggMcpTools, KNOWN_MODULES } = require('./infrastructure/mcp/frigg-tools');
+
+const { GitCheckpointService } = require('./infrastructure/git/git-checkpoint-service');
+
+const { AgentStreamHandler } = require('./infrastructure/streaming/agent-stream-handler');
+
+module.exports = {
+    IAgentFramework,
+    IValidationPipeline,
+    NotImplementedError,
+
+    AgentEvent,
+    AgentEventType,
+    AgentProposal,
+    ProposalStatus,
+
+    VercelAIAdapter,
+    ClaudeAgentAdapter,
+    SUPPORTED_PROVIDERS,
+
+    ValidationPipeline,
+    ValidationLayer,
+    LAYER_WEIGHTS,
+
+    createFriggMcpTools,
+    KNOWN_MODULES,
+
+    GitCheckpointService,
+    AgentStreamHandler
+};