feat(lua): workflow history replayer module

[xepozz]

Reason for This PR

Lua workflows have no way to test determinism / replay safety. Every other
Temporal SDK exposes a WorkflowReplayer to re-execute a recorded history and
catch non-deterministic changes, but there is no equivalent reachable from Lua
or the native test runner. Today such regressions surface only on a live
cluster (as replay panics after a worker restart), never in CI.

This PR adds a Lua-facing replayer so a test can assert a workflow.lua entry
replays deterministically against a recorded event history.

Description of Changes

New builtin module replayer that wraps the SDK's worker.WorkflowReplayer:

local replayer = require("replayer")
-- (true) on deterministic replay, (nil, err) on a non-determinism / mismatch
local ok, err = replayer.replay_json_file("app.foo:my_workflow", "history.json")

• replay_json_file(workflow_id, history_json_path[, workflow_type_name])
  registers the runtime's existing dynamic workflow.DefinitionFactory on a
  WorkflowReplayer (the SDK registry accepts it as a WorkflowDefinitionFactory)
  and replays the history file produced by
  temporal workflow show --workflow-id <id> --output json.
• The optional workflow_type_name overrides the registered type name for
  workflows that set a custom meta name; it defaults to workflow_id.
• The data converter, context propagators, and worker interceptors are taken
  from the runtime context so payloads decode exactly as recorded.
• Class ClassIO, ClassNondeterministic — usable from function.lua/tests,
  not from a workflow body. Registered via a boot component, consistent with the
  other Lua modules.

Files:

• runtime/lua/modules/replayer/{module.go,types.go,module_test.go}
• boot/components/runtime/lua/replayer.go (+ all.go, constants.go)
• service/temporal/workflow/replay_integration_test.go

Tests: unit tests for bind + argument validation; an integration test that runs
a workflow on a dev server, fetches its history, and replays it (both in-memory
and via the JSON-file path) against the DefinitionFactory, asserting nil error.

[Copilot]

Pull request overview

Adds a new Lua-facing replayer builtin module that wraps Temporal’s worker.WorkflowReplayer, enabling determinism/replay-safety tests for Lua workflows by replaying recorded workflow histories (including from JSON files).

Changes:

• Introduces runtime/lua/modules/replayer Lua module with replay_json_file(...) binding and type manifest.
• Registers the module via a new boot component so it’s available consistently with other Lua builtins.
• Adds an integration test that runs a workflow, fetches its history, and validates replay (including JSON-file replay).

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
service/temporal/workflow/replay_integration_test.go	New integration test that replays recorded history to validate deterministic replay behavior.
runtime/lua/modules/replayer/module.go	Implements the Lua replayer module and replay_json_file binding.
runtime/lua/modules/replayer/types.go	Adds the type manifest for the new Lua module.
runtime/lua/modules/replayer/module_test.go	Adds unit tests for binding and argument/context validation behavior.
boot/components/runtime/lua/replayer.go	Registers the new Lua module via boot component.
boot/components/runtime/lua/constants.go	Adds the boot component name constant.
boot/components/runtime/lua/all.go	Includes the new component in the default Lua component set.

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