3471e9a5

Move upload path mapping into MediaWriter

The Processor and VideoProcessor no longer take a separate PathFor
function. Each MediaWriter now decides where a filename lands: LocalWriter
uses the bare filename, and s3.Writer applies its configured subfolder.
Callers ask the writer, so backend-specific path conventions stay with
the backend.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Agent Instructions

Each run corresponds to one flake attribute. Click a run for its logs and status.

Example: https://nix-ci.com/cb:mtlynch:little-moments/slice-2.5/3471e9a5128631d0112ab32308d6e4d1ff05c62e/732d3fa8-3be3-4e1e-b7b9-3312e85d40bc

Wait for suite to complete:

curl --netrc -N https://nix-ci.com/cb:mtlynch:little-moments/slice-2.5/3471e9a5128631d0112ab32308d6e4d1ff05c62e/wait

This page is also available in machine-friendly formats. Request one with the Accept header:

• curl --netrc -H 'Accept: application/json' https://nix-ci.com/cb:mtlynch:little-moments/slice-2.5/3471e9a5128631d0112ab32308d6e4d1ff05c62e
• curl --netrc -H 'Accept: text/markdown' https://nix-ci.com/cb:mtlynch:little-moments/slice-2.5/3471e9a5128631d0112ab32308d6e4d1ff05c62e

For more instructions, fetch https://nix-ci.com/instructions .