docs: CLAUDE.md after the second agent round (#92–#111)

[danielmeza]

Brings CLAUDE.md up to date with everything merged since #91. I checked each statement against the merged code or the PR's own verification.

• Launcher. "Launched any other way … every KiCad operation fails" stopped being true with KiCadSharp 0.3.1 (Bump KiCadSharp to 0.3.1 and port to its view-based document API #99). A hand-started importer now reaches a running KiCad over the default socket with an empty token. The project directory still comes only from KiCad's environment (KiCadImportEngine → KiCadEnvironment.GetProjectDirectory()).
• Providers. CAD availability is now tri-state, and Octopart reads Nexar's public cad field (Show CAD availability as the provider reports it, Unknown distinct from none (#48) #107).
• Import flow.
  • The Part Explorer routes: an LCSC code goes to easyeda2kicad, and a part number gets Find on Ultra Librarian (Give every Part Explorer result an import route or a reason (#47) #100).
  • The download handler's rules: refusal (Refuse browser downloads for real, and import only accepted ones (#97) #106), accepted-only imports, and no Avalonia state on CEF's thread (Use the configured download folder for browser downloads (#108) #111).
  • The .zip path's two KiCadSharp 0.3.1 workarounds (Bump KiCadSharp to 0.3.1 and port to its view-based document API #99), and the kicad-sharp#48 and EasyEDA → KiCad conversion: decide how to handle the AGPL #53 releases that retire them.
  • Replace on re-import (Replace, not append, a re-imported part on the .zip import path (#69) #92), and never overwriting an unloadable library (Leave an existing symbol library that cannot be loaded unchanged (#94) #101).
• Logging. NLog only, and the log folder is computed in code (Set NLog's log folder from code, and make nlog.config's rules take effect (#98) #104). MCP mode keeps only file targets, as an allowlist (Log MCP mode to nlog.config's files and stderr, never stdout (#80) #95). This replaces the stale "MCP mode logs nothing at all".
• Configuration. SpecialFolders.GetPath, never Environment.GetFolderPath directly (Resolve special folders to absolute paths even when they do not exist yet (#70) #93).
• Running the app. Missing XDG dirs are fine now. TMPDIR must be short, because CEF's SingletonSocket path is limited to 108 bytes and a long one aborts startup with exit 133.
• Tracked work. The open list is rewritten around what each item waits on. Part Explorer cannot import the parts it finds #47, Replace the third-party tscircuit index with a first-party source #52, Re-importing a part appends a duplicate symbol to the existing .kicad_sym #69, Paths collapse to the working directory when a special folder does not exist yet #70, Decide the default registration scope: AddToGlobalLibrary registers project libraries in KiCad's global table #71, --mcp mode produces no logs at all, and naively enabling them would corrupt the protocol stream #80, A .kicad_sym that fails to load is overwritten with a fresh library, losing its symbols #94, Refused browser downloads are not refused: Continue("") downloads to CEF's temp directory #97, nlog.config: log paths break on a fresh account, the internal log lands in the working directory, and the final rules suppress nothing #98, A partial import reports "Import succeeded" #102 and Browser downloads ignore the download folder set in Settings #108 are closed.

Docs only.

🤖 Generated with Claude Code

https://claude.ai/code/session_01DHQsqcKVEiAKvCS98Hn4Yh