Agent Skills: athena-work

Use this skill whenever the user references an `.athenabrief` file or an export from the Athena note-taking app \u2014 whether they upload one, mention a file path, or simply say \"here's my Athena export.\" Handles the full workflow: extracting the ZIP package, reading the research brief and note summaries, and producing synthesized output (summaries, reports, analyses, slide outlines, etc.). Works with zero instructions \u2014 the brief itself defines the task. Always finalizes results with the athena-package skill. Do NOT trigger for generic note archives (Obsidian, Roam, Notion), unrelated research writing tasks, or questions about the goddess Athena.