chore(main): release fork-diff 0.7.3

[taiko-kitty]

🤖 I have created a release beep boop

0.7.3 (2026-08-15)

Chores

• protocol: merge taiko-alethia-protocol-v3.0.0 (v3.1.0 + hardening) back to main (f837160)
• protocol: record the v3.0.0 merge ancestry (take 2) (9646f55)
• protocol: record the v3.0.0 merge ancestry (take 2) (bc35381)
• protocol: record the v3.0.0 merge ancestry lost by squashing #21922 (#21930) (ca16fba)

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Avoid tagging fork-diff from an unrelated protocol chore

This fork-diff release only contains the protocol chore from ca16fba, and I checked that commit with git diff-tree and it has no tree diff or packages/fork-diff changes. When this bump is published, .github/workflows/fork-diff--production.yml runs on any fork-diff-* tag and deploys the current taiko-geth branch to production, so merging this would redeploy geth.taiko.xyz from an unrelated empty/protocol-only change without the normal fork-diff preview path. Drop this release or wait until there is an actual fork-diff change to publish.

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