ocda public surface + dub.json import-path and dyaml cleanupsHEADmain

Three small follow-ups to the ocda/outputs split:

1. Add src/sisudoc/ocda/package.d (module sisudoc.ocda) as a 2-line
   public re-export of sisudoc.ocda.abstraction. Provides downstream
   consumers with a canonical "import sisudoc.ocda;" entry point and
   a stable handle for eventual peer-repo packaging of the
   abstraction library.

2. Fix the D import-path root in dub.json so it matches the declared
   module names:
   - spine:abstraction sub-package
     "importPaths": [ "./src/sisudoc" ] -> [ "./src" ]
   - main package buildTypes (dmd, ldc2, ldmd2, gdc, gdmd)
     "-I=src/sisudoc" -> "-I=src"
   The modules are named sisudoc.ocda.* / sisudoc.outputs.* /
   sisudoc.* so the filesystem-based resolver needs to see
   ./src as the root (so <root>/sisudoc/ocda/X.d resolves).

3. Replace dyaml sub-package's destructive preGenerateCommands
   ("rm -rf ./src/ext_depends/D-YAML/{examples,testsuite}") with
   declarative excludedSourceFiles globs. The two directories do
   not exist in the vendored D-YAML tree, so the rm was a no-op
   in practice; the glob form is defensive (would silently skip
   them if they were ever re-introduced) and removes the
   destructive side-effect from every build.

(assisted by Claude-Code)

2 files changed, 38 insertions, 10 deletions

diff --git a/org/config_dub.org b/org/config_dub.org
index d82a5ac..10dd6e5 100644
--- a/org/config_dub.org
+++ b/org/config_dub.org
@@ -54,27 +54,27 @@
   "targetType":                "executable",
   "buildTypes": {
     "dmd": {
-      "dflags":                [ "-O", "-J=views", "-I=src/sisudoc" ],
+      "dflags":                [ "-O", "-J=views", "-I=src" ],
       "buildOptions":          [ "inline", "verbose" ],
       "buildRequirements":     [ "allowWarnings" ]
     },
     "ldc2": {
-      "lflags":                [ "-O2", "-I=src/sisudoc" ],
+      "lflags":                [ "-O2", "-I=src" ],
       "buildOptions":          [ "optimize", "inline", "verbose" ],
       "buildRequirements":     [ "allowWarnings" ]
     },
     "ldmd2": {
-      "dflags":                [ "-O", "-J=views", "-I=src/sisudoc" ],
+      "dflags":                [ "-O", "-J=views", "-I=src" ],
       "buildOptions":          [ "optimize", "inline", "verbose" ],
       "buildRequirements":     [ "allowWarnings" ]
     },
     "gdc": {
-      "lflags":                [ "-O2", "-J=views", "-I=src/sisudoc" ],
+      "lflags":                [ "-O2", "-J=views", "-I=src" ],
       "buildOptions":          [ "optimize", "inline" ],
       "buildRequirements":     [ "allowWarnings" ]
     },
     "gdmd": {
-      "dflags":                [ "-O", "-J=views", "-I=src/sisudoc" ],
+      "dflags":                [ "-O", "-J=views", "-I=src" ],
       "buildOptions":          [ "optimize", "inline" ],
       "buildRequirements":     [ "allowWarnings" ]
     }
@@ -95,7 +95,7 @@
       "license":       "AGPL-3.0+",
       "targetType":    "library",
       "sourcePaths": [ "./src/sisudoc/ocda" ],
-      "importPaths": [ "./src/sisudoc" ],
+      "importPaths": [ "./src" ],
       "buildRequirements": [ "allowWarnings" ],
       "dependencies": {
         "spine:dyaml":        "*",
@@ -147,9 +147,9 @@
         "./src/ext_depends/D-YAML/source",
         "./src/ext_depends/tinyendian/source"
       ],
-      "preGenerateCommands": [
-        "rm -rf ./src/ext_depends/D-YAML/examples",
-        "rm -rf ./src/ext_depends/D-YAML/testsuite"
+      "excludedSourceFiles": [
+        "./src/ext_depends/D-YAML/examples/**",
+        "./src/ext_depends/D-YAML/testsuite/**"
       ]
     }
   ],
diff --git a/org/ocda.org b/org/ocda.org
index a24e335..d5651cc 100644
--- a/org/ocda.org
+++ b/org/ocda.org
@@ -22,7 +22,35 @@
 
 - Process markup document, create document abstraction
 
-** library template :module:metadoc_from_src:
+** library templates
+*** ocda package.d
+
+#+HEADER: :tangle "../src/sisudoc/ocda/package.d"
+#+HEADER: :noweb yes
+#+BEGIN_SRC d
+<<doc_header_including_copyright_and_license>>
+/++
+  sisudoc.ocda - canonical entry point of the document-abstraction
+  library.
+
+  Pipeline position: markup -> abstraction -> output. This package is
+  the abstraction stage; the output stage lives in
+  sisudoc.outputs.io_out and consumes the values produced here.
+
+  This file re-exports sisudoc.ocda.abstraction (the documented public
+  API surface) so that consumers can write
+    import sisudoc.ocda;
+  and reach the entry points (spineAbstraction!(), docAbstraction!(),
+  spineAbstractionTxt) without depending on spine's directory layout.
+
+  No logic lives here.
++/
+module sisudoc.ocda;
+@safe:
+public import sisudoc.ocda.abstraction;
+#+END_SRC
+
+*** ocda/abstraction package.d
 
 #+HEADER: :tangle "../src/sisudoc/ocda/abstraction/package.d"
 #+HEADER: :noweb yes