refactor: streamline the course to 17 lessons

s09_memory/images/memory-subsystems.en.svg

@@ -1,4 +1,4 @@
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-  <text x="360" y="25" fill="#fff" font-size="14" font-weight="700" text-anchor="middle">Memory System — Store · Load · Extract · Consolidate</text>
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@@ -22,12 +22,12 @@
 
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-  <!-- Loading -->
+  <!-- Recall -->
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-  <text x="322" y="80" fill="#5b21b6" font-size="13" font-weight="700" text-anchor="middle">Load</text>
+  <text x="322" y="80" fill="#5b21b6" font-size="13" font-weight="700" text-anchor="middle">Recall</text>
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-  <text x="237" y="108" fill="#5b21b6" font-size="10">Index in SYSTEM (always)</text>
-  <text x="237" y="124" fill="#5b21b6" font-size="10">LLM side-query select files</text>
+  <text x="237" y="108" fill="#5b21b6" font-size="10">Index in the system prompt</text>
+  <text x="237" y="124" fill="#5b21b6" font-size="10">Model selects relevant files</text>
   <text x="237" y="134" fill="#a78bfa" font-size="9">≤ 5 items, fallback to keyword</text>
 
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@@ -36,9 +36,9 @@
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   <text x="522" y="80" fill="#5b21b6" font-size="13" font-weight="700" text-anchor="middle">Extract</text>
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-  <text x="472" y="106" fill="#5b21b6" font-size="9.5">After each turn</text>
-  <text x="472" y="121" fill="#5b21b6" font-size="9.5">Extract prefs</text>
-  <text x="472" y="134" fill="#a78bfa" font-size="8.5">Avoid duplicates</text>
+  <text x="472" y="106" fill="#5b21b6" font-size="9.5">After the turn</text>
+  <text x="472" y="121" fill="#5b21b6" font-size="9.5">Extract durable knowledge</text>
+  <text x="472" y="134" fill="#a78bfa" font-size="8.5">Scope + duplicate checks</text>
 
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@@ -46,7 +46,7 @@
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   <text x="615" y="106" fill="#5b21b6" font-size="9.5">≥ 10 files</text>
   <text x="615" y="121" fill="#5b21b6" font-size="9.5">Dedup · merge</text>
-  <text x="615" y="134" fill="#a78bfa" font-size="8.5">CC: gated Dream</text>
+  <text x="615" y="134" fill="#a78bfa" font-size="8.5">Snapshot + rollback</text>
 
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@@ -69,10 +69,4 @@
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   <text x="140" y="260" fill="#475569" font-size="10">user (who you are) · feedback (how to work) · project (what's happening) · reference (where to find things)</text>
 
-  <!-- CC source comparison -->
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-  <text x="60" y="316" fill="#5b21b6" font-size="11" font-weight="600">CC Source Comparison</text>
-  <text x="60" y="334" fill="#475569" font-size="10">• Selection: LLM side-query (Sonnet selects), not embedding vector similarity</text>
-  <text x="60" y="350" fill="#475569" font-size="10">• Extraction timing: stop hook after each turn, separate from compact_history</text>
-  <text x="60" y="365" fill="#475569" font-size="10">• Dream: time + sessions + file lock, not simple count</text>
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