[repeat98]

The vendored trap and failure registers move to the upstream revision of 5 November 2026, byte for byte, in an eighth docs-only import record. The main correction for Modwerk: the stock DELAY reads its coefficient table across the whole zero run 0x400d24d0..0x400d2ce0, not 16 bytes.

What changes

• sdk/octabam/docs/TRAPS.md and FAILURE_MODES.md: upstream's files at 54200264, unchanged. HARDWARE_MATRIX.md and MIDI_TRACKS.md are identical upstream and stay pinned by their earlier records.
• sdk/imports/octabam-docs-54200264.json: the record (source and vendored SHA-256, review, limitations), added to DOC_IMPORTS in sdk/tests/test_infrastructure_regressions.py.
• sdk/octabam/docs/remixer/PLACEMENT.md (Modwerk's own copy, no record pins it): 0x400d24d0..0x400d2ce0 is no longer listed as a free run. The stock DELAY reads all of it as entries 508..1023 of its table: its low-pass index comes from BASE + WIDTH (up to entry 1016), so the default settings read 0x400d24d0, and boot reads the last word. The 0x400c45b0 run is marked as the zero tail of a glyph block, with whether a character reads it unknown.
• docs/OCTATRACK_HARDWARE_TRAPS.md: the register lists the three entries that reach Modwerk (the DELAY run; the page plane 0x46c7e0ea lacks windows and popups, which UI captures add through lcd_view.py but a bare peek does not; a file open through the stock layer owns the caller's buffer). The card-write race paragraph notes it was seen again in emulator runs. The file is over the 40 KB limit, so it was trimmed elsewhere and is 2 bytes smaller.
• docs/OCTABAM_INFRASTRUCTURE.md: the eighth import's section. Changelog entry.

No code, build input, module source or tool pin changes. The card builders' guard for the DELAY run is the separate base-coupled change in #1045.

Review

• Stock-free scan against the original 1.40C MAIN image (unpacked locally from the stock OS, MAIN 164f3122…; nothing written): TRAPS.md has no hex string of 8 bytes or more; FAILURE_MODES.md has nine, and no 8-byte window of any occurs in MAIN or in its DSP payloads read as big-endian words. The same scan found planted stock bytes in an in-memory probe.
• No instruction listing or encoding. One thing for the reviewer: the rewritten DELAY entry in FAILURE_MODES.md names the low-pass index computation as three instructions by mnemonic at a stock address. It describes how the index is formed and carries no bytes, like the single instructions by mnemonic an earlier docs record accepted. Its one 32-bit value is a word of a module's page cave, not stock.

Checks

• sdk/tests/test_infrastructure_regressions.py: 22 tests pass.
• npm run pr:ready: Ready (full check, sdk:check passed).

What the guides lacked

sdk/octabam/docs/remixer/PLACEMENT.md listed the DELAY's table run as free space, and our trap list said nothing about it; both are fixed here. Nothing else.

🤖 Generated with Claude Code