Engineering Hygiene: OTP 28 upgrade, peer-app deps (E5), start-type handling (E2)#24
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CI now pins OTP 28 (was 27) and rebar3 3.27 (was 3.24). All 320 tests pass clean on OTP 28 / ERTS 16.4, zero warnings. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
graphdb and dictionary are now independent OTP applications started by application_master in dependency order, not included_applications of database. graphdb.app.src gains mnesia and nref as explicit deps; database.app.src gains graphdb and dictionary as regular applications. database_sup is now empty — kept as an attachment point for future database-level services. ARCHITECTURE.md §5 supervision tree updated. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
{takeover, Node} and {failover, Node} now delegate to the normal start
path rather than hitting ?NYI. Full distributed takeover/failover
semantics deferred until a distributed deployment is planned.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
E3 (code_change/3 hot upgrades): deferred until a versioned hot-upgrade deployment is planned. E4 (start_phases): deferred until an externally- visible API port is added to seerstone that requires phased startup to close the bootstrap-window. Both retain their trigger conditions in TASKS.md. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
included_applicationswith peer-app dependencies.graphdbanddictionaryare now real OTP applications started byapplication_masterin dependency order via theapplications:key.database_supis now intentionally empty (placeholder for future database-level coordination work).seerstone:start/2andnref:start/2now delegate non-normal start types ({takeover, _},{failover, _}) to the normal start path instead of?NYI-exiting. This is the correct behavior until distributed startup is needed.TASKS.mdwith trigger conditions documented (E3: first hot-upgrade deployment; E4: externally-visible API port added toseerstone).Documentation refreshed:
ARCHITECTURE.md§1 / §5 reflect 5-peer-app supervision tree; per-appCLAUDE.mdfiles updated.Test plan
rebar3 compileclean on OTP 28rebar3 ct— 217 CT cases passrebar3 eunit— 103 EUnit cases passnref → graphdb → dictionary → database → seerstone🤖 Generated with Claude Code