feat: Refactor services architecture and update project structure

- Remove Docker-based microservices (docker-compose.yml, Makefile, Dockerfiles)
- Update start-dev.sh to use backend.app:app entry point
- Add shared schema and client modules for service communication
- Add team coordination modules (messenger, registry, task_delegator, coordinator)
- Add evaluation hooks and skill adaptation hooks
- Add skill template and gateway server
- Update frontend WebSocket URL configuration
- Add explain components for insider and technical analysis

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

shared/schema/signals.py

@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+"""Signal and analysis-related schemas."""
+
+from pydantic import BaseModel
+
+from shared.schema.portfolio import Portfolio
+
+
+class AnalystSignal(BaseModel):
+    signal: str | None = None
+    confidence: float | None = None
+    reasoning: dict | str | None = None
+    # Extended fields for richer signal information
+    reasons: list[str] | None = None  # Core drivers/reasons for the signal
+    risks: list[str] | None = None  # Key risk factors
+    invalidation: str | None = None  # Conditions that would invalidate the thesis
+    next_action: str | None = None  # Suggested next action for PM
+    # Valuation-related fields
+    intrinsic_value: float | None = None  # DCF intrinsic value
+    fair_value_range: dict | None = None  # {bear, base, bull} fair value range
+    value_gap_pct: float | None = None  # Value gap percentage
+    valuation_methods: list[str] | None = None  # List of valuation methods used
+    max_position_size: float | None = None  # For risk management signals
+
+
+class TickerAnalysis(BaseModel):
+    ticker: str
+    analyst_signals: dict[str, AnalystSignal]  # agent_name -> signal mapping
+
+
+class AgentStateData(BaseModel):
+    tickers: list[str]
+    portfolio: Portfolio
+    start_date: str
+    end_date: str
+    ticker_analyses: dict[str, TickerAnalysis]  # ticker -> analysis mapping
+
+
+class AgentStateMetadata(BaseModel):
+    show_reasoning: bool = False
+    model_config = {"extra": "allow"}