Draft: dora 1.0 consolidation (Phase 1 → 5a)

[heyong4725]

Draft — dora 1.0 consolidation (Phase 1 → 5a)

This PR is the landing pad for the dora 1.0 consolidation. Phase 1-5a commits land here; at Phase 5a it's merged with --no-ff to produce the pre-release tag. Do not merge until Phase 5a.

Context

• Strategy: D-0a — tree-replacement merge. The dora-rs/adora fork tree takes over as the dora 1.0 baseline. See governance resolution in dora-rs/adora#287.
• Wire protocol: D-1a — hard break. Existing 0.5.0 daemons cannot interoperate with 1.0. Full cluster restart required for upgrade. See dora-rs/adora docs/phase--1-audit-2026-04-16.md.
• Zenoh SHM: D-7c — partial migration (data plane only) lands in Phase 3b; control channels stay on custom shmem until 1.1.
• Downstream users: zero production deployments identified. See dora-rs/adora docs/downstream-user-assessment-2026-04-16.md.
• Plan document: dora-rs/adora docs/plan-dora-1.0-consolidation.md.
• Execution tracker: dora-rs/adora#305 with sub-issues for each phase.

Phase-by-phase

• Phase 0 — preparation (v0.x-final tag, legacy/0.x branch, dora-0.2.1-baseline tag on fork, this PR opened, freeze on main). dora-rs/adora#306 closed.
• Phase 1 — mechanical ours-merge (de5d2fca9). Merge commit on v1.0-rewrite whose tree is fork's (373b82797) and whose two parents are fork-main and upstream-v0.x-final-tip (52835cff6). Tree verified empty-diff against fork/main; cargo check --all --exclude <python packages> passed in 1m10s. dora-rs/adora#307 closed.
• Phase 3 — test & example union (b0425f3e3). 2 files ported (node_exit_status test; error-propagation README); 11 upstream-only files documented as removed/superseded in docs/migration-from-0.x.md. dora-rs/adora#308 closed.
• Phase 3b — deferred to RC-window landings (Implement Stream for EventStream #309 closed 2026-04-17). D and zenoh SHM migration land progressively as rc.2 and rc.3 per Cannot exec dora or dora-cli command when install dora with conda on macOS #313 + Implement support for primitive data types for dataflow.yaml #314. 1.0 GA ships with both. Plan doc rescoped in 7c2a2a926.
• Phase 4 — compat shim crates (apis/rust/compat/, dora-* 0.3.0, dora-rs 0.3.0). dora-rs/adora#310
• Phase 5a — tag v1.0.0-rc.1 + pre-release publish. dora-rs/adora#311

Contributors preserved

Post-merge git shortlog -sne HEAD on v1.0-rewrite shows 127 unique authors across both histories. Top contributors:

3,809 Philipp Oppermann
3,614 haixuanTao (across 3 email aliases — .mailmap pass pending before Phase 5a)
  504 Yong (heyong4725)
  274 Yuma Hiramatsu
  110 ShashwatPatil
   84 XxChang
  ...

Follow-up commits on this branch before Phase 5a:

• .mailmap to collapse the 3 haixuanTao email aliases
• CONTRIBUTORS.md generated from git log --format='%aN <%aE>' | sort -uf — durable attribution independent of GitHub UI rendering

Testing

Each phase has its own verification gate documented in the sub-issue. CI runs on every push; the draft status means no accidental early-merge.

Rollback

Any phase can be rolled back by force-pushing v1.0-rewrite to an earlier commit. Before Phase 5a publish, there's no external-visible artifact to clean up.