Expand model tag support: add GLM-5.1, simplify Anthropic IDs, scan tags anywhere in message

- Flink update_bars debouncing
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- Add GLM-5.1 model tag alongside renamed GLM-5
- Use short Anthropic model IDs (sonnet/haiku/opus) instead of full version strings
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- Hierarchical knowledge base catalog
- 151 Trading Strategies knowledge base articles
- Shapes knowledge base article
- MutateShapes tool instead of workspace patch

gateway/knowledge/trading/strategies/options/covered-call.md

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+---
+description: "A buy-write strategy combining long stock with a short call at strike K, generating income by capping upside in exchange for premium collected."
+tags: [options, income, covered, bullish]
+---
+
+# Covered Call
+
+**Section**: 2.2 | **Asset Class**: Options | **Type**: Income
+
+## Overview
+The covered call (a.k.a. "buy-write") strategy amounts to buying stock and writing a call option with strike K against the long stock position. The trader's outlook is neutral to bullish. It has the same payoff as writing a naked put and allows the trader to generate income by periodically selling OTM call options while maintaining the long stock position.
+
+## Construction
+- Buy 1 share of stock at price S0
+- Sell 1 call option at strike K, receiving net credit C
+
+Net position: long stock + short call
+
+## Payoff Profile
+f_T = S_T - S_0 - (S_T - K)+ + C = K - S_0 - (K - S_T)+ + C
+
+- Breakeven: S* = S0 - C
+- Max profit: P_max = K - S0 + C  (achieved when S_T >= K)
+- Max loss: L_max = S0 - C  (if stock goes to zero)
+
+## Key Conditions / Signals
+- Neutral to mildly bullish outlook on the underlying
+- Elevated implied volatility makes collected premium more attractive
+- Suitable for income generation when the trader is comfortable capping upside at K
+
+## Notes
+The covered call strategy is equivalent to writing a put option (short/naked put) in terms of payoff. Upside is capped at K; downside risk is the full cost of the stock minus premium received.