description: Idiomatic Go style (Effective Go + Code Review Comments) globs: ["**/*.go"] alwaysApply: true

• Format with gofmt; tabs for indentation, no parentheses on if/for/switch.
• MixedCaps/mixedCaps, never underscores. Capitalized first letter = exported.
• Package names: short, lower-case, single word. No util/common/misc; don't stutter.
• Getters drop Get (Owner()/SetOwner()). One-method interfaces use the -er suffix.
• Initialisms keep consistent case: ServeHTTP, appID, URL.
• Error strings lower-case, no trailing punctuation; prefix with the operation/package.
• Handle every error — return, handle, or panic. Never discard with _. Don't panic for normal flow.
• Avoid in-band errors; return an extra error or ok bool.
• Check errors early and return; keep the happy path at minimal indentation; drop the else after a terminating if.
• Keep interfaces small. Accept interfaces, return concrete types. Define them in the consuming package, not "for mocking".
• "Do not communicate by sharing memory; instead, share memory by communicating" — prefer channels and select.
• Pass context.Context as the first parameter; prefer synchronous functions.
• Receiver names: consistent 1–2 letter abbreviation of the type, never me/this/self.
• Pointer receiver to mutate / large structs / sync.Mutex; value receiver for small immutable types; when in doubt, pointer.
• defer cleanup after acquiring the resource. new(T) for zeroed *T, make for slices/maps/channels.
• Doc comments: full sentences starting with the name, ending with a period.
• Use crypto/rand for keys/secrets, never math/rand.