c142166972
No secure element is on-site: event signing runs on the software HMAC (EVENT_SIGNING_KEY, an env var on the host disk), so the ledger is tamper-EVIDENT but forgeable by anyone who owns the host. Several pages overstated it as present-tense "ATECC608-signed / unforgeable"; correct them. - NEW concepts/hardware-signer-options.md: four options for a non-extractable signing key (USB HSM / YubiKey / reuse the TPM / plain-dongle trap) + the recommendation (TPM interim → USB-HSM target; ATECC608 stays for the embedded ESP32, wrong part for a PC host). - entities/atecc608.md: UPCOMING-not-present status banner + PC-vs-embedded. - disk-os-hardening.md: fix the live-USB row (BIOS boot-order password is load-bearing, not Secure Boot — a signed live USB runs); add a physical-tamper chain (Dell 7070 CMOS-reset → live-USB → PCR-7 same-signer unseal) + accepted risks (that unseal, unsigned-initramfs evil-maid, operator-USB read TODO). - open-questions #6 reframed; standing-decisions / overview / threat-model / index de-overstated; log query entry. Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V