feat(research): add mana-research service — Phase 1 + 2

New Bun/Hono service on port 3068 that bundles many web-research providers
behind a unified interface for side-by-side comparison. All eval runs
persist in research.* (mana_platform) so quality can be reviewed later.

Providers (Phase 1+2):
  search:  searxng, duckduckgo, brave, tavily, exa, serper
  extract: readability (via mana-search), jina-reader, firecrawl

Endpoints:
  POST /v1/search, /v1/search/compare       — single + fan-out
  POST /v1/extract, /v1/extract/compare     — single + fan-out
  GET  /v1/runs, /v1/runs/:id               — history
  POST /v1/runs/:run/results/:id/rate       — manual eval
  GET  /v1/providers, /v1/providers/health  — catalog + readiness

Auto-routing: when `provider` is omitted, queries are classified via regex
(fast path, 0ms) with optional mana-llm fallback, then routed to the first
available provider for that query type (news → tavily, academic → exa,
semantic → exa, etc.).

Credits: server-key calls go through mana-credits reserve → commit/refund
so failed provider calls don't charge the user. BYO-keys supported via
research.provider_configs (UI arrives in Phase 4).

Cache: Redis with graceful degradation (1h TTL for search, 24h for
extract). Pay-per-use APIs only — no subscription-gated providers.

Docs: docs/plans/mana-research-service.md + docs/reports/web-research-capabilities.md

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.env.development

@@ -380,6 +380,32 @@ MANA_GAMES_GITHUB_TOKEN=your_github_token_here
 MANA_GAMES_GITHUB_OWNER=tillschneider
 MANA_GAMES_GITHUB_REPO=mana-games
 
+# ============================================
+# MANA-RESEARCH SERVICE (Port 3068)
+# ============================================
+# Unified web research orchestration across 16+ providers.
+# Phase 1: SearXNG, DuckDuckGo, Brave, Tavily.
+
+MANA_RESEARCH_PORT=3068
+MANA_RESEARCH_DATABASE_URL=postgresql://mana:devpassword@localhost:5432/mana_platform
+MANA_RESEARCH_CACHE_TTL_SECONDS=3600
+
+# Search APIs (pay-per-use only, no subscriptions)
+BRAVE_API_KEY=
+TAVILY_API_KEY=
+EXA_API_KEY=
+SERPER_API_KEY=
+
+# Extract APIs
+JINA_API_KEY=
+FIRECRAWL_API_KEY=
+SCRAPINGBEE_API_KEY=
+
+# Research Agents (Phase 3)
+PERPLEXITY_API_KEY=
+ANTHROPIC_API_KEY=
+OPENAI_API_KEY=
+
 # ============================================
 # FINANCE PROJECT
 # ============================================