Change FunctionNotFound analyzer severity to Info for cross-assembly scenarios (#584)

* Initial plan

* Change DURABLE2003/2004 severity to Info and update messages per issue #580

Co-authored-by: YunchuWang <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: YunchuWang <[email protected]>
Co-authored-by: wangbill <[email protected]>

Author: Copilot

src/Analyzers/Activities/FunctionNotFoundAnalyzer.cs

@@ -37,7 +37,7 @@ public sealed class FunctionNotFoundAnalyzer : DiagnosticAnalyzer
         ActivityNotFoundTitle,
         ActivityNotFoundMessageFormat,
         AnalyzersCategories.Activity,
-        DiagnosticSeverity.Warning,
+        DiagnosticSeverity.Info,
         customTags: [WellKnownDiagnosticTags.CompilationEnd],
         isEnabledByDefault: true,
         helpLinkUri: "https://go.microsoft.com/fwlink/?linkid=2346202");
@@ -47,7 +47,7 @@ public sealed class FunctionNotFoundAnalyzer : DiagnosticAnalyzer
         SubOrchestrationNotFoundTitle,
         SubOrchestrationNotFoundMessageFormat,
         AnalyzersCategories.Orchestration,
-        DiagnosticSeverity.Warning,
+        DiagnosticSeverity.Info,
         customTags: [WellKnownDiagnosticTags.CompilationEnd],
         isEnabledByDefault: true,
         helpLinkUri: "https://go.microsoft.com/fwlink/?linkid=2346202");

src/Analyzers/AnalyzerReleases.Shipped.md

@@ -7,8 +7,8 @@
 
 Rule ID | Category | Severity | Notes
 --------|----------|----------|-------
-DURABLE2003 | Activity | Warning | **FunctionNotFoundAnalyzer**: Warns when an activity function call references a name that does not match any defined activity in the compilation.
-DURABLE2004 | Orchestration | Warning | **FunctionNotFoundAnalyzer**: Warns when a sub-orchestration call references a name that does not match any defined orchestrator in the compilation.
+DURABLE2003 | Activity | Info | **FunctionNotFoundAnalyzer**: Reports when an activity function call references a name that does not match any defined activity in the compilation. If the function is defined in another assembly, this diagnostic can be safely ignored. Static resolution across referenced assemblies is not supported.
+DURABLE2004 | Orchestration | Info | **FunctionNotFoundAnalyzer**: Reports when a sub-orchestration call references a name that does not match any defined orchestrator in the compilation. If the function is defined in another assembly, this diagnostic can be safely ignored. Static resolution across referenced assemblies is not supported.
 
 ## Release 0.1.0
 

src/Analyzers/Resources.resx

@@ -205,13 +205,13 @@
     <value>Use '{0}' instead of '{1}'</value>
   </data>
   <data name="ActivityNotFoundAnalyzerMessageFormat" xml:space="preserve">
-    <value>The activity function '{0}' was not found in the current compilation. Ensure the activity is defined and the name matches exactly.</value>
+    <value>The activity function '{0}' was not found in the current compilation. Ensure the activity is defined and the name matches exactly. If the function is defined in another assembly, this diagnostic can be safely ignored. Static resolution across referenced assemblies is not supported.</value>
   </data>
   <data name="ActivityNotFoundAnalyzerTitle" xml:space="preserve">
     <value>Activity function not found</value>
   </data>
   <data name="SubOrchestrationNotFoundAnalyzerMessageFormat" xml:space="preserve">
-    <value>The sub-orchestration '{0}' was not found in the current compilation. Ensure the orchestrator is defined and the name matches exactly.</value>
+    <value>The sub-orchestration '{0}' was not found in the current compilation. Ensure the orchestrator is defined and the name matches exactly. If the function is defined in another assembly, this diagnostic can be safely ignored. Static resolution across referenced assemblies is not supported.</value>
   </data>
   <data name="SubOrchestrationNotFoundAnalyzerTitle" xml:space="preserve">
     <value>Sub-orchestration not found</value>