Jim's Depository

Reverse-engineering undocumented BLE characteristics and avoiding BlueZ/NimBLE connection traps made remote battery telemetry possible—until a stuck client silently removes a pack from advertising for hours.

Cassandra’s Deal eliminates its “Settings” screen and makes for a less stressful app experience.

Cassandra’s Deal uses real-time solvability analysis to flag the move that ruins a winnable Klondike hand—while its creation exposes where AI coding agents excel and where platform expertise still matters.

Keep Ethernet as the active connection while macOS scans nearby Wi‑Fi beacons for geolocation. Disabling Auto Join on saved networks prevents unwanted wireless failover without sacrificing Location Services.

A default Postfix fallback can rewrite 8-bit mail after DKIM signing, leaving downstream verifiers chasing mysterious body-hash failures. The incident is a practical warning to support 8BITMIME/SMTPUTF8 and inspect every hop that can transform a signed message.

A seemingly harmless resolver quirk can turn ordinary UDP lookups into intermittent latency spikes or outright failures. Packet captures expose why TCP fallback masks the problem—and why DNS clients should treat truncation handling as a reliability requirement.

A one-day, Codex-built macOS tool tackles Create ML image labeling without nag screens or awkward workflows—and even ships with AI-generated puppy, kitten, and duckling sample data.

Passkeys modernize account security, Atom restores feed-reader compatibility, and smarter HTTP caching delivers faster pages with fewer unnecessary downloads.

Replacing Lighter and Stencil with llibsqlite3 and a Swift HTML DSL became a rapid, guided Codex exercise—showing where AI can eliminate repetitive migration work while leaving API design decisions in human hands.

A long-dormant mail domain becomes an unexpected test of internet memory, delivery retries, and harvested addresses—raising the question of whether these messages are spam, ghosts, or both.