feat(pki): add typed CLI operation foundation

Add a reusable PKI session and typed synchronous operation executor
shared by direct CLI commands and versioned sequential batch plans.

Provide deterministic references, structured output, failure policies and
safe lifecycle handling without introducing a scripting language or runtime.

app/build.gradle

@@ -8,8 +8,11 @@ group='org.egothor'
 dependencies {
     implementation 'org.apache.commons:commons-text'
     implementation 'commons-cli:commons-cli'
+    implementation platform('tools.jackson:jackson-bom:3.1.5')
+    implementation 'tools.jackson.core:jackson-core'
     implementation project(':lib')
     implementation project(':ext')
+    implementation project(':pki')
     // might be removed if I move BC ops to the lib
     testImplementation 'org.bouncycastle:bcpkix-jdk18on'
 }
@@ -57,4 +60,3 @@ jar {
 javadoc {
     options.links("https://www.egothor.org/javadoc/zeroecho/lib")
 }
-