Enhance pipeline documentation with new features

Expanded the pipeline documentation to include details about the Dev Harness and added new features related to compaction strategies and test frameworks.

docs/harness/pipeline.md

@@ -1,5 +1,47 @@
 # Harness "Pipeline"
-Focused on answering the question: What's in the pipeline?
+Focused on answering the question: What's in the pipeline with regards to the _Dev Harness_?
 
 ## Features
-1.
+
+1. Slot Filling Orchestration (a.k.a. "Guided Conversations")
+   
+2. Functional Compaction Strategy
+
+Support a functional pattern for creating a compaction strategy with a range of configurations:
+
+```c#
+// Setup a chat client for summarization
+IChatClient summarizingChatClient = ...;
+
+// Create a compaction strategy based on a menu selection of characteristics
+CompactionStrategy tunedStrategy =
+   CompactionStrategy.Create(
+      Approach.Balanced,
+      Size.Compact,
+      summarizingChatClient);
+```
+
+As an alternative to making every configuration decision:
+
+```c#
+// Setup a chat client for summarization
+IChatClient summarizingChatClient = ...;
+
+// Configure the compaction pipeline with one of each strategy, ordered least to most aggressive.
+PipelineCompactionStrategy compactionPipeline =
+    new(// 1. Gentle: collapse old tool-call groups into short summaries like "[Tool calls: LookupPrice]"
+        new ToolResultCompactionStrategy(CompactionTriggers.TokensExceed(0x200)),
+
+        // 2. Moderate: use an LLM to summarize older conversation spans into a concise message
+        new SummarizationCompactionStrategy(summarizingChatClient, CompactionTriggers.TokensExceed(0x500)),
+
+        // 3. Aggressive: keep only the last N user turns and their responses
+        new SlidingWindowCompactionStrategy(CompactionTriggers.TurnsExceed(4)),
+
+        // 4. Emergency: drop oldest groups until under the token budget
+        new TruncationCompactionStrategy(CompactionTriggers.TokensExceed(0x8000)));
+```
+
+3. Test Framework: Large Context
+
+4. Stabilization