fix: Update 1-minute market data docs - No TradingView upgrade needed

GOOD NEWS: TradingView alert limits are for ACTIVE alerts (slots), not trigger count!

Current Status:
- Essential plan: 20 alert slots
- Used: 4/20 slots
- Needed for 1-min data: 3 slots (SOL/ETH/BTC)
- After implementation: 7/20 slots (13 free)

Cost Impact:
- BEFORE: Documented as $35/month TradingView Pro upgrade required
- AFTER: $0/month - Use existing Essential plan ✅

Changes:
- Updated cost analysis section: $35/month → $0/month
- Updated alert volume section: Clarified slot vs trigger distinction
- Updated header: Added zero-cost callout
- Removed all Pro subscription upgrade requirements

Implementation Path:
- Phase 1: Create 3 alerts on existing subscription
- Phase 2: Validate for 24-48 hours
- Phase 3: Integrate ADX validation into revenge system

No financial approval needed - pure infrastructure improvement at zero cost!

docs/1MIN_MARKET_DATA_IMPLEMENTATION.md

@@ -1,7 +1,13 @@
 # 1-Minute Market Data Collection - Implementation Plan
 
-**Status:** READY TO IMPLEMENT (Nov 27, 2025)  
-**Purpose:** Enable real-time ADX validation for revenge system (Enhancement #1)
+**Status:** READY TO IMPLEMENT - Zero Cost! (Nov 27, 2025)  
+**Purpose:** Enable real-time ADX validation for revenge system (Enhancement #1)  
+**Cost:** $0/month - No TradingView upgrade needed ✅
+
+**GOOD NEWS:** Alert limits are for ACTIVE alerts (slots), not trigger frequency!
+- Current: 4/20 alert slots used
+- Needed: 3 slots (SOL/ETH/BTC)
+- Result: 13 slots still free after implementation
 
 ---
 
@@ -188,12 +194,17 @@ alertcondition(true, title="1min Data Feed", message='
 
 ### Expected Alert Volume
 ```
-Per symbol: 60 alerts/hour = 1,440 alerts/day
-With 3 symbols: 4,320 alerts/day
-TradingView free tier: 400 alerts/month (NOT ENOUGH)
-TradingView Pro tier: Unlimited alerts ✅
+Per symbol: 60 alerts/hour = 1,440 alerts/day = 43,200 alerts/month
+With 3 symbols: 4,320 alerts/day = 129,600 alerts/month
 
-User needs: Pro or Premium plan ($14.95-$59.95/month)
+TradingView Alert Limits:
+- Limit is on ACTIVE alerts (slots), not trigger count ✅
+- Essential plan: 20 alert slots
+- User's current usage: 4/20 slots used
+- Needed for this feature: 3 slots (SOL/ETH/BTC 1-minute)
+- Remaining after: 13/20 slots free
+
+Result: NO UPGRADE NEEDED - sufficient alert slots available ✅
 ```
 
 ---
@@ -304,9 +315,17 @@ export async function POST(request: Request) {
 ## Cost Analysis
 
 ### TradingView Subscription
-- **Current:** Essential ($14.95/month) - 400 alerts/month (NOT ENOUGH)
-- **Required:** Pro ($49.95/month) - Unlimited alerts ✅
-- **Alternative:** Premium ($59.95/month) - More indicators + features
+- **Current Plan:** Essential ($14.95/month)
+  - **GOOD NEWS:** Alert limits are for ACTIVE alerts (slots), not trigger count ✅
+  - Current usage: 4/20 alert slots used
+  - **Available:** 16 unused alert slots
+  - **NO UPGRADE NEEDED** for 1-minute data collection
+
+- **Alert Slot Requirements:**
+  - SOL-PERP 1-minute: 1 alert slot
+  - ETH-PERP 1-minute: 1 alert slot  
+  - BTC-PERP 1-minute: 1 alert slot
+  - **Total needed:** 3 alert slots (13 slots still free after implementation)
 
 ### Database Storage (Phase 2 Only)
 - **Monthly:** ~20 MB with 3 symbols
@@ -318,7 +337,7 @@ export async function POST(request: Request) {
 - **Memory:** +60 KB per symbol in cache (180 KB total for 3 symbols)
 - **Network:** 150 bytes × 4,320 alerts/day = 648 KB/day = 19.4 MB/month
 
-**Total Additional Cost:** ~$35/month (TradingView Pro upgrade)
+**Total Additional Cost:** $0/month (no TradingView upgrade needed!) ✅
 
 ---