Fix project move row alignment

[x1han]

Summary

• Normalize projected thread rows when moving a chat from the projectless Chats list into a project list.
• Add the project-thread spacer and title margin used by native project rows, and remove that injected indent when moving back to Chats.
• Add regression assertions for the injection script helpers.

Verification

ode --check assets\inject\renderer-inject.js

• cargo test -p codex-plus-core --test cdp_bridge
• git diff --check origin/main...HEAD

Manual validation

Measured the live Codex sidebar via CDP for a moved thread in D:\Documents\x1han: the moved row title changed from 18px left offset to 40px, matching native project rows at 40px.

[BigPizzaV3]

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[x1han]

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从[对话]移动过去的，保留了之前的缩进，需要更新。