Modularize Electron main process

[krwg]

Summary

~50 IPC handlers inline in main.cjs.

Target milestone: 1.2.0 Dolce
Work branch: 1.2.0-dolce/issue-8-electron-lib

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Problem

637 LOC monolith hard to test.

Expected behavior

electron/lib/ grouped handlers; thin bootstrap.

Suggested approach

ipc-library, ipc-glyph, ipc-state, main-window modules.

Files / areas

• electron/main.cjs
• electron/lib/

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Acceptance criteria

• Handlers grouped by domain

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Metadata

Field	Value
Priority	P1
Milestone	1.2.0 Dolce
Branch	1.2.0-dolce/issue-8-electron-lib