Remove Legacy Credential Bootstrap Paths

Decouple user provisioning from HTTPS identity storage while retaining
compatible v1 user records and migrating TLS material to the
credential-free
v2 format. Add focused security regression coverage and update operator
documentation.

src/console_completion.c

@@ -126,8 +126,6 @@ static const char *const s_completion_candidates[] = {
     "user status",
     "user list",
     "user show",
-    "user bootstrap",
-    "user bootstrap --generate",
     "user recover --force",
     "user add",
     "user delete",
@@ -188,10 +186,6 @@ static const char *const s_completion_candidates[] = {
     "web diagnostics disable",
     "web diagnostics show",
     "web diagnostics clear",
-    "web credentials",
-    "web credentials show",
-    "web credentials rotate",
-    "web credentials rotate --force",
     "web certificate",
     "web certificate info",
     "web certificate rotate",