郭立 (leeguoo)
Search
EN 中文 日本語

Hi, I'm leeguoo (Guo Li)

· Guo Li · full-stack developer ·

❯ Start Reading ❯ Membership
★ FEATURED posts/wechat-decrypt-vs-wechat-use.md + 1 min read
@leeguoo · Jul 6, 2026 · Article · public

Two Paths to Local WeChat Data: A Principle-Level Comparison of wechat-use and wechat-decrypt (with Corrections from Real-World Testing)

Two WeChat decryption tools are often compared, but usually along the wrong axis. The real difference is not how many features they have, but how they obtain the SQLCipher key. This article breaks both down at the principle level: SQLCipher’s per-database key model, two mechanisms for extracting keys from memory (LLDB + entitlement vs. sudo + mach_vm), and corrections to two mistaken judgments I made in the first version after actually running wechat-use on my own machine.
$ ls -lh ./posts/ | head -4
Jul 17, 2026
-rw-r--r--
1 min read
❯Learning Video Generation from the Wan2.2 Source Code: From One Prompt to 81 Frames at 720p
A walkthrough of the full principles behind video generation using the real Wan2.2 code: flow matching mathematical derivation, VAE spatiotemporal compression, DiT and 3D RoPE, CFG, MoE dual experts, condition injection, and sequence parallelism, with concrete numbers calculated for every concept and original code excerpts included.
→
Jul 19, 2026
-rw-r--r--
1 min read
❯Giving Coding Agents a Room Where They Can @ Each Other: What AgentParty Is, Where It’s Used, and How It Works
AgentParty is a very thin bus that lets coding agents from different machines and different companies — along with the people behind them — stay in the same channel to @ each other, stand by, and hand things off. This article explains it along three lines: what it is and what problem it solves; what scenarios it can be used in; and how its underlying architecture is built.
→
Jul 16, 2026
-rw-r--r--
1 min read
❯After Reading All of Wan2.2’s Source Code: Where This Video Generation Code Will Bite You
From the five-task matrix and layered architecture to DiT/VAE/T5/distributed execution/schedulers, this article breaks down, layer by layer, the real pitfalls in the Wan2.2 source code where the documentation and implementation diverge.
→
Jul 7, 2026
-rw-r--r--
1 min read
❯How to Use Codex’s Computer Use in Claude Code
Codex’s Computer Use only recognizes OpenAI’s own signature. As soon as another agent tries to perform a real action, it gets blocked with -10000. I took that signature gate apart down to the assembly, then used a thirty-line DYLD hook to change the team ID it reads, wiring the whole Computer Use stack into Claude Code. This article is both a teardown and a connection method you can copy.
→
 $ ls ./archives/ · 8+ entries →
Reverse Engineering & Security

Reverse Engineering & Security

Reverse Engineering & Security

All →

Facing AI Audits: How Can You “Legalize” Your Reverse Engineering Project?

Examines a practical approach to handling decompilation projects by combining Claude Code and Gemini CLI, focusing on the challenge of ownership verification and resolving it through an automated sanitization process.

How I Verified the Local Database Unlock Chain in WeChat macOS 4.0.1.52

A retrospective on engineering-focused forensics conducted on my own device. By tracing static files, runtime open paths, and SQLCipher parameters in sequence, I ultimately confirmed that the local database unlock chain in WeChat macOS 4.0.1.52 is based on an account-level key distribution model.

AI & Agent

AI & Agent

AI & Agents

All →

iphone-use — Computer-use, but for the iPhone

An open-source agent control layer for a real iPhone: live browser remote + a see/act HTTP API for AI agents. Three input layers (Shortcut verbs / element tree / pixel fallback), clean CJK input, hardware-validated.

Is the `cache 4m23s` Line in the Status Bar Actually Accurate?

There’s a prompt-cache countdown line in the status bar I wrote for Claude Code. Where it anchors, how the formula works, and when it lies to you — let’s pull apart the source code alongside a real transcript.

Dissecting the Implementation of the /goal Command

Based on the Claude Code 2.1.139 headless source code, this breaks down how the /goal command drives the Agent to keep working until a condition is met through a session-level Stop hook.

claude agents and /bg: An Analysis of the Agent View Implementation

Based on the Claude Code 2.1.139 source code, this article breaks down how claude agents, --bg, and /bg share the background job model, daemon, and FleetView TUI.