diff --git a/AGENTS.md b/AGENTS.md
index 30c0de9..9b3b673 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -128,6 +128,10 @@ follows is only what that means for **this** project.
 
 ## Things that have bitten
 
+Project-specific only — a lesson that would bite any project on this
+machine belongs in `~/.claude/TOOLCHAIN.md` (toolchain versions) or
+`~/.claude/MACHINE.md` (the machine itself) instead.
+
 - **tracing caches callsite interest process-wide.** A test that hits a
   `tracing::warn!` with no subscriber installed can poison the interest
   cache for a concurrent test that captures logs (flaky "nothing was
@@ -138,9 +142,6 @@ follows is only what that means for **this** project.
   Without `android:windowSoftInputMode="adjustResize"`, opening the IME
   slides the whole window up (top bar off screen) instead of resizing —
   `imePadding()` alone doesn't fix it and the transcript looks empty.
-- **CMP 1.11 deprecates the `compose.*` dependency accessors** — declare
-  `org.jetbrains.compose.<x>:<x>` directly (material3 has its own release
-  train, separate from the CMP version).
 - **A PEM constant must start at the opening quotes.** A generated
   `"""\n-----BEGIN CERTIFICATE-----` costs Android's `CertificateFactory`
   its preamble sniff, so it tries DER instead and fails at runtime with
@@ -154,7 +155,3 @@ follows is only what that means for **this** project.
   making the server dictate the colours. `EnrollmentScanActivity` also
   turns off the library's 10% framing-rect inset (it decodes only what is
   inside it) and its laser/result-point decorations.
-- **AGP 9 refuses `Provider`s in the source-set API**: generated sources go
-  through `androidComponents.onVariants { it.sources.java?.addGenerated
-  SourceDirectory(task, Task::outputDir) }`, which also carries the task
-  dependency.