💭 Looking at the error classes to see which ones still have unresolved issues with how they store and derive their messages. Most of them are handling this correctly by deriving from nativePath, but TeleportNativeWriteError is still storing message as a field with varied construction patterns that need attention. Now I'm checking the key service files to verify the layer setup is correct — TeleportService is properly using Context.Service with the inline interface exported, and the layer composition chains through ProcessRunner and TeleportFormatRegistry correctly. The server integration looks good too with RuntimeCoreDependenciesLive being provided. For the error handling, TeleportInvalidInputError still uses a free-form reason field as a catch-all for multiple distinct failures, which was flagged in the prior run. The author changed it from storing message to deriving it from reason, but the underlying issue — using a single error type with unstructured data for many different failure cases — remains the same. Since the code didn't fundamentally change in response to that feedback, I shouldn't repeat the comment. Let me focus on what's actually new or changed in this cumulative diff compared to earlier runs. Looking at the imports and error handling patterns across the files: the helpers in teleport.ts are straightforward, the Atom import from the reactivity module follows existing conventions, and the process runner uses Effect.catchTags appropriately. The isWindowsPathInUse function catches PlatformError with structural predicates, which is allowed. In the registry module, there's a question about whether wrapping the synchronous construction in Effect.sync is necessary or if it's just forcing the use of Layer.effect — Layer.succeed would be more direct here. The module does own its construction, so Effect.sync is acceptable here even if not strictly Effect.succeed. I'm checking the error handling in TeleportService.ts — the stopThreadProviderSession function maps errors to TeleportInvalidInputError at the boundary, which follows the conventions. I'm seeing similar patterns throughout with Effect.mapError constructing custom errors with reasons and causes, all of which look fine. For the Effect.catch handling the entire error channel with logging, that's allowed per the guidelines. The context extraction with Effect.context<FileSystem | Path | TeleportFormatRegistry | ProcessRunner>() is straightforward — dependencies come from the environment via provideNative. Now I'm looking at ProviderCommandReactor.ts where it uses Cause.pretty(cause) in a log warning, which raises a concern about copying arbitrary defect text into detail fields or log payloads. I'm noticing a pattern violation at the service boundary — the imports are using named imports for provider services when they should be importing the module as a namespace instead, like how OrchestrationEngine is being imported. This inconsistency suggests the diff isn't following the established convention for service module imports. I'm noticing that Cause.pretty shows up frequently in the logs, which is standard. The codebase has a mixed pattern with named imports of service tags from the Services directory—some files like ProviderSessionReaper.ts and ProviderAdapterRegistry.ts follow this convention, while others like TeleportService.ts don't consistently adhere to it. The guideline suggests importing service modules as namespaces at service boundaries, but since this inconsistency is widespread and I've already flagged similar issues elsewhere, I'm reconsidering whether to flag TeleportService.ts's named imports. Looking at ProviderService and similar modules, they primarily export just the tag and shape type, so a named import of the tag alone is arguably acceptable—the module shape being used is limited to that tag. It's borderline since other files do both, so I'll move on. Now I need to examine the actual TeleportService.ts file and related teleport modules for any remaining convention violations. I'm particularly looking at how error classes like TeleportUnsupportedProviderError and TeleportNativeWriteError are structured—the convention calls for using Schema.TaggedErrorClass with structured attributes rather than storing the message as a direct field. For TeleportNativeWriteError, the message isn't the only data (it also has nativePath and cause), but the message itself is free-form text that varies by operation ("Failed to bind the exported native session", "Failed to replace X", etc.). The prior review flagged this pattern for other error classes and partially addressed it, but TeleportNativeWriteError wasn't mentioned. Given that the messages vary meaningfully across different operations, the convention suggests either adding an operation/stage discriminator with a derived message, or splitting into separate error classes. Storing free-form message plus nativePath appears to violate the principle of capturing stable, structured attributes. Let me look at the actual TeleportService.ts and related files to find more concrete violations. I'm noticing that alreadyInFlightError is a zero-argument factory that just constructs a constant error object, which violates the pattern of avoiding helpers whose sole purpose is wrapping error construction. Since it's only used twice with identical fields, it's a candidate for removal. But the bigger issue I'm seeing is TeleportInvalidInputError itself — it's a catch-all error class with 15+ distinct free-form reasons that drive the user-facing messages. The convention is clear: when a reason field is used to determine the user message, that's a sign to split into separate semantic error classes instead. Here the reason IS the message, making it a free-form message field with no other data, which directly violates the convention. This was flagged before in an earlier commit but only partially addressed. I'm hesitant to re-flag it since the author did respond by renaming the field and adding a getter, which technically counts as a code change. But that's more cosmetic than structural — deriving the message from a reason field where reason is already the message doesn't actually fix the underlying design issue. I'd rather focus on finding new violations in the code that's changed since the last review. Since the force-pushed branch wiped out the prior commits, I can't compare against previous versions, so I'll need to review the current state of the remaining teleport files directly. I'm going through exportPresence.ts, resumeCursors.ts, sessionFile.ts, discovery.ts, homes.ts, the formats directory, and the rest of TeleportService.ts to check for convention issues like error construction helpers, catchTag usage, and Layer.succeed mismatches. Now I'm searching for catchTag, catchIf, Layer.succeed, ManagedRuntime, and runPromise across the changed files to see where these patterns are being used, and I'll make sure we're using named or namespace imports at service boundaries. I'm checking the error handling patterns across multiple lines where Effect.catch is used to log and swallow failures, which aligns with the convention that this approach is acceptable when handling the entire error channel. Now I'm looking at how TeleportUnsupportedProviderError is constructed with a message field being passed in. The issue is that the message follows a fixed template derived solely from the provider field — Teleport does not support provider '${provider}.' — which means the message is redundant and should be derived from structured attributes instead of stored as unstructured data. I need to check all the construction sites for TeleportUnsupportedProviderError to confirm this pattern holds everywhere, similar to what I found with TeleportFileLockedError. I'm noticing a pattern in the error classes where TeleportUnsupportedProviderError unnecessarily stores a message field when it could derive it from the provider parameter instead—this violates the same convention that was flagged elsewhere and should be fixed by converting message to a getter. I also see that TeleportNativeWriteError handles free-form messages differently, though the thought cuts off before explaining the full issue. I'm checking what error types the verify and parse functions actually return — verify yields TeleportNativeWriteError while parse yields TeleportSchemaVersionError. The current mapError approach with _tag checks works but could be cleaner using Effect.catchTags instead, which would also let me fix the message derivation issue by constructing it from nativePath and operation stage rather than copying from the cause. Let me examine the full verify block to write a solid comment about this pattern. I'm identifying a concrete issue in the TeleportUnsupportedProviderError class where it's storing a redundant message field that gets passed identically across all three construction sites. The fix is to remove that field and replace it with a getter that dynamically generates the message string. Since this change requires updating the call sites, I can't use an inline suggestion — I'll need to provide a unified diff showing both the class modification and mention where the callers need updating. For TeleportNativeWriteError, the problem is more structural: it's storing free-form message text when it should instead have a stage or operation field, with the message derived from that. There's also a placeholder nativePath value being used just to satisfy a required field, and downstream code is building wrapper messages directly from the error's message property, which violates the principle of structured error data. I'll post comments on both issues pointing to the specific lines. Now I'm finalizing the review comments — I've identified the key violations and need to write them concisely. I'll flag the message field storage pattern across the three construction sites in teleport.ts, mention the TeleportNativeWriteError message derivation issue in codex.ts, and note the nativePath constant in TeleportService.ts. Since I have solid findings, I'm marking this as a failure state and submitting the review with focused, actionable comments. Writing diff suggestion... The line numbers in my inline comments need to match the positions in the diff, and I can confirm that codex.ts line 428 is present in the updated file. I'm ready to submit the review.

1. modify_pr — Reviewed the new teleport service against the Effect service conventions. Service shape (Context.Service with inline interface, exported make/layer), dependency acquisition via yield*, and Effect.catchTags usage all look right now. Three remaining error-modelling issues below.