Remove lossy default-action writes that can replace china-proxy
with gfwlist. Preserve legacy preference reads and derive the
default action from the selected preset.
Update tests to use explicit presets and verify identity,
legacy compatibility, and no-op reselection.
Add Mainland China proxy routing with independent rule workspaces.
Preserve existing routing choices through equivalent preset mappings.
BREAKING CHANGE: existing custom rules and enablement settings are
not migrated. Recreate them in the appropriate preset.
Replace the custom encrypted container with AgeSwift 0.1.0 so standard
age tools can inspect sensitive configuration independently of the app.
Use independent Keychain X25519 identities for catalog.age and
proxy-listening.age. Preserve atomic commits and confirmed recovery;
reject historical NG2 formats without migration or cleanup.
Drop workflow port and credential prechecks that duplicated the store
gate. Credential shape is a save constraint only while LAN
authentication is enabled; terminal commands treat password() as a
usable secret without reshaping it.
Qiu Yuzhou