Pir 0.1.5

Pir 0.1.5 updates pin controls and image display modes

• Upper-left controls use Close, Restore, image scaling, and Copy order; text and file pins show their applicable actions
• Successful copies show an animated checkmark for 1.2 seconds, with repeated copies restarting the feedback interval
• Images switch between cover and fit with smooth image and icon transitions
• Image scaling survives restarts and Paste Again; existing sessions default to cover
• Fit keeps the original image and window frame, with transparent letterboxing and resize input along the edges

Includes #13, #14, and #15

Validation: 112 Swift tests, 5 release-tool tests, localization and website checks, Universal macOS 13+ build, and application rendering of cover and restored fit modes

Limited Review: desktop automation could not consistently activate hover controls; button state, timing, order, and mode actions have regression coverage, while full transition appearance has limited manual verification