Initial commit: SWOOSH bootstrap with statechart spec, OpenAPI, ADRs, and ops harnesses

adr/0001-adopt-statecharts.md

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+# ADR 0001: Adopt Deterministic Statecharts
+
+## Decision
+Use hierarchical statecharts with pure reducers governing SWOOSH orchestration.
+
+## Rationale
+Chaos resilience, auditability, time-gated cadence (BACKBEAT), idempotency, replay.
+
+## Consequences
+- Requires WAL + snapshots.
+- Transition API becomes the single mutation path.

adr/0002-transition-api-and-wal.md

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+# ADR 0002: Transition API & WAL
+
+## Decision
+All mutations flow through a signed Transition API. Accepted transitions append to WAL, then mutate state.
+
+## Details
+- Store `(state_pre_hash, transition, inputs_hash, signer, idem_key, hlc, window_id)`.
+- Emit BUBBLE DR with UCXL backlinks upon accept.