Distillation

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<observations> Date: Jul 21, 2026 * 🟡 (11:50) User requested a rigorous, skeptical adversarial CORRECTNESS review (not style/cosmetic) of a single-file CI change in repo /home/byk/Code/getsentry/spotlight, branch fix/notarize-key-pem-armor (PR #1334), base main, file .github/workflows/build.yml. [requested-review] * 🔴 (11:50) User stated GitHub secret APPLE_API_KEY is base64-encoded JSON with fields issuer_id, key_id, private_key; private_key field is confirmed empirically to be a bare unarmored base64 DER PKCS#8 EC P-256 private key (~200 chars, single line, no BEGIN/END). * 🔴 (11:50) User stated Xcode 26's notarytool rejects an unarmored key file, motivating the PEM-armoring fix. * 🔴 (11:50) User stated the fix is applied identically in two places in build.yml: the Linux `build` job and the `electron-mac` job, both under bash default shell. * 🔴 (11:50) User instructed reproduction must occur ONLY in /tmp/opencode scratch dir, using openssl-generated throwaway P-256 key; must NOT modify tracked files; must clean up /tmp/opencode scratch files when done. [enforced-workflow] * 🟡 (11:50) User listed 7 specific correctness points to verify empirically: (1) set -e/pipefail interaction with `grep -q` inside an if-condition, (2) whether armored output parses via `openssl pkey -noout` and whether blank echo before END is necessary, (3) fold -w 64 newline byte layout on no-trailing-newline input, (4) whether tr -d ' \r\n' corrupts base64 (spaces safe), (5) whether already-armored passthrough via `printf '%s\n'` preserves embedded newlines through command substitution, (6) whether snippet leaks key material to logs, (7) whether both job copies are identical/correct and whether env var names (APPLE_API_KEY_ISSUER_ID vs APPLE_API_ISSUER) are appropriately different. * 🟡 (11:50) Assistant read diff: build.yml diff replaces `cat /tmp/apple_key.json | jq .private_key -r > /tmp/apple_key.pem` with a conditional block: `KEY_BODY="$(jq -r .private_key /tmp/apple_key.json)"`; if KEY_BODY contains 'BEGIN PRIVATE KEY' → passthrough via `printf '%s\n'`; else → wraps in `-----BEGIN PRIVATE KEY-----`/`-----END PRIVATE KEY-----` armor using `tr -d ' \r\n' | fold -w 64` plus a standalone `echo` before END. Same change applied at build.yml lines ~86-91 (build job) and ~400-405 (electron-mac job). * 🟡 (11:51) Assistant confirmed via file read: build.yml has `defaults.run.shell: bash` at line 14-16, meaning GitHub