Release for tags/v0.5.1

Features

• Add btc_sign_prehash to sign an arbitrary digest under the BTC key

Maintenance

• Submit (variant { Upgrade }) for upgrade proposals, so an upgrade preserves the canister configuration instead of re-applying the Init args
• Lead the release runbook with the now-working release automation
• Document the release bot credentials prerequisite
• Add BOT_APPROVED_FILES so the release bot can bump the version
• Avoid SIGPIPE in the commit.txt build step
• Bump quinn-proto to 0.11.15 (RUSTSEC-2026-0185)
• Bump dev and CI dependencies (candid, bitcoin, @icp-sdk/core, vite, peter-evans/create-pull-request, actions/cache, dorny/paths-filter)

Changelog

• docs(ci): Document the release bot credentials prerequisite by @sbpublic in #538
• feat(signer): add btc_sign_prehash to sign an arbitrary digest under the BTC key by @AntonioVentilii in #545
• chore(deps): Bump peter-evans/create-pull-request from 6.0.5 to 8.1.1 by @dependabot[bot] in #532
• chore(deps): Bump actions/cache from 5.0.5 to 6.1.0 by @dependabot[bot] in #540
• chore(deps): Bump @icp-sdk/core from 5.2.1 to 5.4.0 by @dependabot[bot] in #536
• chore(deps-dev): Bump vite from 8.0.16 to 8.1.2 by @dependabot[bot] in #542
• chore(deps): Bump candid from 0.10.29 to 0.10.31 by @dependabot[bot] in #547
• feat(scripts): Use (variant { Upgrade }) for upgrade proposals by @sbpublic in #539
• chore(deps): Bump bitcoin from 0.32.100 to 0.32.101 by @dependabot[bot] in #544
• chore(deps): Bump dorny/paths-filter from 4.0.1 to 4.0.2 by @dependabot[bot] in #550
• fix(ci): Avoid SIGPIPE in commit.txt build step by @AntonioVentilii in #558
• chore(deps): Bump quinn-proto to 0.11.15 for RUSTSEC-2026-0185 by @AntonioVentilii in #559
• chore(ci): Add BOT_APPROVED_FILES so the release bot can bump the version by @AntonioVentilii in #562
• docs(release): Lead with the now-working release automation by @AntonioVentilii in #561
• chore(release): Bump version to 0.5.1 by @pr-automation-bot-public[bot] in #560

Full Changelog: v0.5.0...v0.5.1