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2 changes: 1 addition & 1 deletion .agents/skills/uloop-hot-reload/references/output.md
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Expand Up @@ -6,7 +6,7 @@ Returns JSON with:
- `ErrorCode` (string, optional): Present on parameter validation failure. Values are `HOT_RELOAD_FILES_REQUIRED` when an omitted apply has no compile snapshots, `HOT_RELOAD_NO_CHANGED_FILES` when snapshots contain no changed `.cs` files, `HOT_RELOAD_INVALID_FILES` when `--files` contains a null or empty path, and `HOT_RELOAD_STATUS_CONFLICT` when `--status` is combined with `--files` or `--revert-all`.
- `NextActions` (array, optional): Ordered recovery steps, present only with `ErrorCode` on a parameter validation failure. Omitted from every other response, including successful apply, plain `--status`, and `--revert-all` runs.
- `Methods` (array): Per-method `{ Kind, Method, Reason, FilePath, InvocationCount, LifecycleNote, ReappliedFromSibling }` where `Kind` is `Patched`, `Skipped`, `Failed`, `Added`, `AlreadyActive`, or `Stale` on apply runs, and `Active`, `Added`, or `AddedField` on `--status` runs; empty on `--revert-all` runs. `AlreadyActive` means this file's source matched the last fully applied reload (a run with no Skipped or Failed outcomes), so the existing patch was left in place and the row carries the live `InvocationCount`. `Stale` means the method was deleted from the edited source while its patch is still installed: compiled callers keep running the patched body until `uloop compile`, `--revert-all`, or a later reload whose source restores the method to the compiled baseline clears it; a reload that declares the method with a different body replaces the patch instead of clearing it. Stale rows keep counting toward `ActivePatchTotal`, and the Message summary includes `Stale=N`. `InvocationCount` is meaningful on `Active` and `Added` rows of `--status` and on `AlreadyActive` and `Stale` apply rows (calls into the patched or added body since it was applied); it is `0` on other apply/revert outcomes, including the `Added` rows of the run that applied them. On `--status`, an `Active` row with `InvocationCount` 0 sets `Reason` to explain that the method has not run since the patch: finished calls do not re-run, the patched body takes effect on the next call, and how to retrigger an initialization-only path. When the edited source later declares a different signature, that `Active` row's `Reason` instead explains it is superseded by a new declaration of that signature and is no longer the entry point for new calls (superseded wins over the never-invoked sentence). On `--status`, an `Added` row counts calls into the added member's body since it was applied; while that count is 0, its `Reason` explains that compiled code cannot call an added member, so only a hot-reloaded body that calls it, or the hot-reload proxy delivering a forwarded Unity message in Play Mode, can run it. An added iterator counts when its enumeration starts, whereas a patched iterator, and an async method of either kind, counts when it is called. An `AlreadyActive` row for an added member carries that member's count. `AddedField` rows list a live added field as `Type.field` with an empty `Reason`; they are not method patches. `LifecycleNote` is set when a patched method is a Unity one-shot lifecycle message (`private void Awake`/`Start`/`OnEnable`/`OnDisable`/`OnDestroy` on a `MonoBehaviour`), or when every compiled call path into the patched method (callers of callers are followed a few levels within the compiled assemblies) starts at such a message; empty otherwise — it does not change `Kind`. On an `Added` row whose method is a Unity message, `LifecycleNote` instead says whether the engine will reach it: a forwarded message (`Start`, `Update`, the collision/trigger/mouse messages, and the rest listed in [scope-and-limits.md](scope-and-limits.md)) carries the note that a hot-reload proxy component delivers it to live instances while Play Mode runs, that the proxy is rebuilt only when a later reload changes which messages the type adds or their signatures, that execution order relative to other components is not guaranteed, and that it is gone on any compile or domain reload (only an added `Start` row also says that it runs once on each existing instance when the proxy attaches, and again when the proxy is rebuilt); a message this feature leaves to the compiler (`Awake`, `OnEnable`, `OnDisable`, `OnDestroy`, the editor-only messages, and any non-void message) carries the note that the engine does not invoke it until `uloop compile`, and the run adds one `Warnings` line naming every such message together. `Added` rows carry the added member's signature and file. `ReappliedFromSibling` is `true` on every apply row, whatever its `Kind`, that belongs to a sibling file the run pulled in to re-apply changes from earlier reloads rather than to a file passed in `--files`; it is `false` on the other rows and on every `--status` and `--revert-all` row. Message's re-applied count covers only the `Patched` and `Added` rows among them. `Method` spells parameter types as .NET metadata does, the same on every method row: a constructed generic as ``System.Collections.Generic.List`1<System.Int32>``, a multidimensional array as `System.Int32[0...,0...]`, and a nested type with `+`. Example `--status` row: `{ "Kind": "Added", "Method": "Ns.Host.NewHelper(System.Int32)", "Reason": "", "FilePath": "Assets/Scripts/Host.cs", "InvocationCount": 3, "LifecycleNote": "", "ReappliedFromSibling": false }`
- `Warnings` (array): Non-fatal notes — one aggregated line listing the patched methods at risk of being already JIT-inlined into existing callers — those marked `[AggressiveInlining]`, plus (only when Code Optimization is Release) those with tiny pre-patch bodies — meaning the change may not show at those call sites, the pause-point interaction (see [pause-point-interaction.md](pause-point-interaction.md)), and the const drift, outside-body drift, missing-baseline, and left-out enum file entries described in [scope-and-limits.md](scope-and-limits.md). Skipped outcomes are echoed here as `Skipped <Method>: <Reason>`, or as one `Skipped N methods: <Reason> (<methods>)` line per reason when several share it, so checking `Warnings` alone is enough to see that an edit was not applied. When a reload re-applies unchanged files so their patches bind to this run's shim, Warnings includes `Also re-applied N unchanged file(s) with active patches in assembly '...' so their patches bind to this reload's shim: ...`. When a pulled-in sibling fails in that reload, Warnings includes `'...' was pulled in to re-bind its active patches but this reload failed for it; see its rows for which patches changed and run uloop compile to clear the run.` instead of the re-applied line. When every row of that sibling was `Skipped` and none failed, Warnings instead includes `'...' was pulled in to re-bind its active patches, but every method there was Skipped this time; see its rows for the reasons. Any earlier patches there stay active until uloop compile clears the run.` When the reload stopped before re-applying anything at all, so that sibling has no rows, Warnings instead includes `'...' was pulled in to re-bind its active patches, but this reload stopped before re-applying them, so its active patches are unchanged. Fix the refused declaration and rerun, or run uloop compile to clear the run.` When the whole reload was refused, so that sibling's only rows are `Method` = `(file)` `Failed` rows repeating the refusal and none of its unchanged patches were reverted, Warnings instead includes `'...' was pulled in to re-bind its active patches, but the whole reload was refused before re-applying them, so its active patches are unchanged; its rows repeat the refusal reason. Fix that and rerun, or run uloop compile to clear the run.` When a sibling still has active patches but its source changed since they were applied, Warnings includes `'...' has active patches but its source changed since they were applied, so it was not re-applied; pass it to hot-reload to update it.` When a run carries two or more warnings and all of them are hot reload warnings, the Message ends with "A single 'uloop compile' clears all of them at once when you want them gone; none of them has to be cleared before you keep working." — it is the shortest recovery, not an obligation to compile immediately. Pause-point warnings carry their own recovery steps, so that line does not appear when they are present. Nor does it appear when an `IntroducedTypes` row is `Failed` or a warning says a declared type requires a compile, because that type does not exist until one. It is also left off when any `Methods` row is `Failed`, or when a `Methods` row of a file you passed, or of a sibling retried after an earlier Skip, is `Skipped`: that body is not running yet, so it needs a fix or a compile before you keep working. A `Skipped` row of a sibling pulled in only to re-bind its active patches does not leave it off, because the earlier patches there keep running.
- `Warnings` (array): Non-fatal notes — one aggregated line listing the patched methods at risk of being already JIT-inlined into existing callers — those marked `[AggressiveInlining]`, plus (only when Code Optimization is Release) those with tiny pre-patch bodies — meaning the change may not show at those call sites, the pause-point interaction (see [pause-point-interaction.md](pause-point-interaction.md)), and the const drift, outside-body drift, missing-baseline, and left-out enum file entries described in [scope-and-limits.md](scope-and-limits.md). Skipped outcomes are echoed here as `Skipped <Method>: <Reason>`, or as one `Skipped N methods: <Reason> (<methods>)` line per reason when several share it, so checking `Warnings` alone is enough to see that an edit was not applied. When a reload re-applies unchanged files so their patches bind to this run's shim, Warnings includes `Also re-applied N unchanged file(s) with active patches in assembly '...' so their patches bind to this reload's shim: ...`. When a pulled-in sibling fails in that reload, Warnings includes `'...' was pulled in to re-bind its active patches but this reload failed for it; see its rows for which patches changed and run uloop compile to clear the run.` instead of the re-applied line. When every row of that sibling was `Skipped` and none failed, Warnings instead includes `'...' was pulled in to re-bind its active patches, but every method there was Skipped this time; see its rows for the reasons. Any earlier patches there stay active until uloop compile clears the run.` When the reload stopped before re-applying anything at all, so that sibling has no rows, Warnings instead includes `'...' was pulled in to re-bind its active patches, but this reload stopped before re-applying them, so its active patches are unchanged. Fix the refused declaration and rerun, or run uloop compile to clear the run.` When the whole reload was refused, so that sibling's only rows are `Method` = `(file)` `Failed` rows repeating the refusal and none of its unchanged patches were reverted, Warnings instead includes `'...' was pulled in to re-bind its active patches, but the whole reload was refused before re-applying them, so its active patches are unchanged; its rows repeat the refusal reason. Fix that and rerun, or run uloop compile to clear the run.` When a sibling still has active patches but its source changed since they were applied, Warnings includes `'...' has active patches but its source changed since they were applied, so it was not re-applied; pass it to hot-reload to update it.` When a patch or added member that an earlier reload applied still calls an added member that is no longer registered — a later reload changed its signature, deleted it, or skipped it while the caller did not apply again — Warnings includes `Methods that earlier hot reloads patched or added still call added members that are no longer registered: <Caller> calls <Member>, .... Those calls still run the members' earlier bodies, which match neither the compiled assembly nor the source on disk. Reload until the calling methods apply again, or run 'uloop compile'.` on every reload that includes the caller's file or the member's file; see [troubleshooting.md](troubleshooting.md). When a run carries two or more warnings and all of them are hot reload warnings, the Message ends with "A single 'uloop compile' clears all of them at once when you want them gone; none of them has to be cleared before you keep working." — it is the shortest recovery, not an obligation to compile immediately. Pause-point warnings carry their own recovery steps, so that line does not appear when they are present. Nor does it appear when an `IntroducedTypes` row is `Failed` or a warning says a declared type requires a compile, because that type does not exist until one. It is also left off when any `Methods` row is `Failed`, or when a `Methods` row of a file you passed, or of a sibling retried after an earlier Skip, is `Skipped`: that body is not running yet, so it needs a fix or a compile before you keep working. A `Skipped` row of a sibling pulled in only to re-bind its active patches does not leave it off, because the earlier patches there keep running.
- `PatchedTotal` (number): Methods patched in this run
- `AddedFields` (array): source-level names ("Type.field") of fields this reload added; their values live outside the compiled type until 'uloop compile'. Every run that adds fields also carries one warning stating that the values live outside the compiled assembly and last only until the next 'uloop compile' or domain reload; the warning names exactly the fields listed in AddedFields. An active added field declared with `[SerializeField]`, `[SerializeReference]`, or `[FormerlySerializedAs]` is also named, as `Namespace.Type.field` (nested types joined with `.`), in one `Added field(s) with a serialization attribute will not appear in the Inspector or serialize until 'uloop compile': ...` warning that points at [added-field-wiring.md](added-field-wiring.md). Only the run that first leaves the field active names it; a file that is Skipped or Failed names none of its fields, and a field is named again only after it stopped being active or after `--revert-all`. Pause-point `CapturedVariables` never includes these fields; `enable-pause-point` warns when the resolved type has any.
- `AddedConsts` (array): source-level names ("Type.const") of consts this reload added. They are folded into edited bodies as literals, so they are not listed in AddedFields and do not emit the added-field lifetime warning.
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Expand Up @@ -213,6 +213,9 @@ method: a copy the JIT inlined into another method before the patch, and a deleg
the old method the caller created before it. A call inside a lambda or local function
stays listed under its compiler-generated name even when the method declaring it is
patched.
An added member that a later reload re-signatures or deletes has no compiled callers, but a
hot-reloaded caller that does not apply again in that reload keeps calling the member's
earlier body; `Warnings` then names that call (see [troubleshooting.md](troubleshooting.md)).

Field declarations are stricter: when a compiled field's type — or its `static`/
`const` modifier — differs from the edited source, every edited method that reads
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15 changes: 15 additions & 0 deletions .agents/skills/uloop-hot-reload/references/troubleshooting.md
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Expand Up @@ -75,3 +75,18 @@ the hits with `uloop pause-point-status`: the failing statement sits at or after
marked line that records a hit, and before the first one that records none. A line inside
an added method cannot hold a pause point until `uloop compile`, so mark the line that
calls it instead.

## When Earlier Patches Still Call an Added Member That Is Gone

A patched or added body keeps calling the added members it was applied against. When a later
reload changes such a member's signature, deletes it, or reports it `Skipped`, the member is
no longer registered and `--status` stops listing it, but a caller that did not apply again
in that reload — its row is `Failed` or `Skipped`, or its file was not re-applied — still
runs the member's earlier body, which matches neither the compiled assembly nor the source
on disk. `Warnings` then carries one line naming each such call as `<Caller> calls <Member>`,
with `<Member>` in the signature the caller was applied against.

The line comes back on every reload that includes the caller's file or the member's file,
and stops once the caller applies again: fix what the caller's row reported and reload its
file together with the member's file, or run `uloop compile`. A reload that includes neither
file does not repeat it.
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