productivity▌

Retrospectives are critical ceremonies for team learning and continuous improvement. Effective facilitation creates psychological safety, encourages honest feedback, and drives tangible improvements.

Systematic diagnosis and resolution of app hangs. A hang occurs when the main thread is blocked for more than 1 second, making the app unresponsive to user input.

BlockRun works with Claude Code and Google Antigravity.

Layer 2: Design Choices

Core principle 90% of file storage problems stem from choosing the wrong storage location, misunderstanding file protection levels, or missing backup exclusions—not iOS file system bugs.

Core Data issues manifest as production crashes from schema mismatches, mysterious concurrency errors, performance degradation under load, and data corruption from unsafe migrations. Core principle 85% of Core Data problems stem from misunderstanding thread-confinement, schema migration requirements, and relationship query patterns—not Core Data defects.

Porting OpenGL/OpenGL ES or DirectX code to Metal on Apple platforms.

Compute technical indicators using pandas-ta. Supports multi-symbol analysis and earnings data.

PUA P10 战略层 — 定方向管 P9 \n \n 定战略、造土壤、断事用人。写战略输入不写 Prompt，管 P9 不管 P8。 \n \n 详细协议见 references/p10-protocol.md 。加载后按协议执行。 \n 核心行为遵循 /pua 核心 skill 的三条红线和旁白协议。

Core principle: Core Data is a mature object graph and persistence framework. Use it when needing features SwiftData doesn't support, or when targeting older iOS versions.