test(cluster): F10 omega-bootstrap end-to-end integration test

[TickTockBent]

Summary

Closes #90. Adds the integration test that exercises the full omega bootstrap path — DNS resolution, signed-list verification, root self-recognition, cluster bootstrap, IsRoot() 403-gate, and peer convergence — in a single test invocation.

This is the test that would have caught F1/F2/F3/F11 the moment the spec landed. Every preflight finding was caught by humans during the burn-in because no test before this exercised the composition of trust + cluster + bootstrap + root-gate. The unit tests in internal/trust/ cover the resolver path in isolation; nothing pulled the whole stack together.

What's covered

Test	What it locks in
TestOmegaBootstrap_RootsConvergeAndNonRootJoins	happy path: two roots converge, non-root joins via roots, root status correctly classified per the signed list
TestOmegaBootstrap_NonRootRejectsWith403	non-roots return 403 on /v1/bootstrap even when reachable; protects against rogue-node topology harvesting
TestOmegaBootstrap_TamperedListRejected	list signed by a different keypair fails verification
TestOmegaBootstrap_ExpiredListRejected	list with valid signature but past expiration is rejected

Test design

• Reuses the testNode harness from integration_test.go but installs a different /v1/bootstrap handler (makeOmegaBootstrapHandler) that mirrors the production IsRoot() gate. The shared harness skips the gate because it's used by tests where IsRoot is not a concept.
• signTestList, buildResolver, and resolveAndApply helpers walk the same code paths cmd/repram/main.go uses, with injectable DNS via the stubTXTResolver pattern from internal/trust/resolver_test.go.
• Roots are flipped to IsRoot=true on every node before any node calls Start. In production all roots come up before bootstrap traffic flows; doing the resolve+SetRoot phase first matches that ordering rather than racing the first starter against a peer that hasn't yet flipped IsRoot=true.

Drive-by

The Nodes field doc in internal/trust/signedlist.go still said "host:gossip-port" — predates #82's port-semantics fix. Updated to "host:http-port" with a #82 reference.

What this doesn't do

• Doesn't exercise cmd/repram/main.go's resolveOmegaBootstrap() directly — that function is hardcoded to use the baked-in pubkey + production DNS config, which makes it untestable without refactoring. The integration test exercises the same composition (trust.FetchSigned + cluster.NewClusterNode + bootstrap with 403-gate handler), with injection seams the production binary doesn't need.
• Doesn't cover the cache-fallback path (DNS unreachable → load from disk). Already covered at the unit level in internal/trust/cache_test.go.
• Doesn't add a TS-side equivalent. The TS bootstrap flow is structurally similar but lives in repram-mcp/src/index.ts; a TS-side integration test would be a follow-on. Filed mentally as a candidate for if/when a similar finding surfaces in TS.

Suite results

• Go: all packages green; 4 new tests in internal/cluster

Test plan

• CI green
• Spot-check that the new tests would have caught F1/F2 (they would: if Nodes contained gossip_port instead of http_port, the addr() comparison in resolveAndApply would fail to match any seed and no node would self-recognize as a root → cluster fails to bootstrap → test fails)

Closes

Closes #90

// ticktockbent

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Project	Deployment	Actions	Updated (UTC)
repram	Ready	Preview, Comment	Apr 27, 2026 5:20pm

[TickTockBent]

Update — review fixes pushed (`c6e6eee`)

• Suggestion 1 (handler divergence): added a comment to `makeOmegaBootstrapHandler` clarifying the intentional difference from production. The real handler gates on `network == "public" && !IsRoot()`; the test handler omits the network guard because every node in these tests is in omega-resolution mode. A future test that exercises the private-network path should reinstate the network guard.

• Suggestion 2 (F1/F2 claim was overstated): my original test docstring said the test "would have caught F1/F2 instantly." The reviewer caught that the testNode harness uses the same ephemeral port for both `gossipPort` and `httpPort` — so if someone reverted main.go's `selfAdvertised` from `httpPort` to `gossipPort`, this test would still pass (both values are numerically equal in the harness). Reworded the docstring to scope the claim: catches spec-level regressions in the signed-list address shape; does not catch code-level port-variable swaps. Locking down the latter would need a test with distinct gossip/http ports — out of scope here, captured as future work.

• Skipped (worth tracking, not in this PR):

  • Nits 1-4: comment about body-read order, helper for the resolveAndApply loop, marshalling `gossip.BootstrapRequest` instead of raw JSON in 403 test, `errors.Is` once sentinels are exported.
  • Coverage gaps: dynamic root flip, explicit F3 contact-all-seeds assertion, F4 self-in-response at integration level. These are real gaps but each merits its own focused test rather than piling onto this PR. Worth filing as a follow-up if the team wants them tracked separately.