phase 11.3: update COLLISION-DETECTION-STATUS for Phase 5.1+8.2 coverage

Updates the 'What this does NOT cover' section to accurately reflect
current implementation state:

  - Item 1: [[package]].files now COVERED (Phase 5.1, 39 recipes)
  - Item 3: base dynamic paths now PARTIALLY COVERED (Phase 8.2,
    18 hardcoded paths from base's Makefile)
  - 162 total paths surveyed across installs + files + dynamic

Round 12 (Phase 11.x) work:
  - Phase 11.0: Baseline audit — 0 orphans, 0 collisions, all forks pass
  - Phase 11.1: Syscall fork investigation — 448 ahead / 3 behind;
    merge conflicts prevent force-push; intentional divergence
    documented (similar to kernel/bootloader/installer)

local/docs/COLLISION-DETECTION-STATUS.md

@@ -64,12 +64,9 @@ historical) is not present in the active build.
 
 1. **Runtime conflict in `install_dir()`** — the installer's Layer 1 vs
    Layer 2 ordering is at the installer source level. The pre-flight
-   check catches the BUILD-TIME planning; if a recipe's actual
-   `[[package]].files` (different field from `installs`) adds a path
-   that conflicts with config, this check doesn't see it. Future work:
-   extend `verify-collision-detection.py` to also read
-   `[[package]].files` paths. **DONE in Phase 5.1: now reads
-   `[[package]].files` as well as `[[package]].installs`.**
+   check catches the BUILD-TIME planning. **COVERED as of Phase 5.1:
+   `[[package]].files` paths are now checked alongside `[[package]].installs`
+   (39 recipes use this field). 162 total paths surveyed.**
 
 2. **Patch-induced collision** — if a Red Bear patch adds a file to a
    package's install manifest at fork-build time, the pre-flight check
@@ -77,8 +74,11 @@ historical) is not present in the active build.
    recipe state, not fork-merge state.
 
 3. **Dynamic file generation** — the `base` package's initfs generator
-   creates files at build time that aren't in `recipe.toml`. Those are
-   not checked. Future work: trace installer source for generated paths.
+   creates files at build time (`/usr/lib/boot/initfs.img`,
+   `/usr/lib/init.d/*`, `/usr/lib/drivers/*`). **PARTIALLY COVERED
+   as of Phase 8.2: 18 hardcoded dynamic-build paths from base's
+   Makefile are now checked.** Future work: auto-detect these paths
+   from the Makefile rather than hardcoding.
 
 4. **In-file test cases** — the `--selftest` mode (Phase 5.4) tests
    the algorithm against 8 hard-coded cases. A more comprehensive