punk::repl 0.2.0: wire interp_sync_package_paths into codethread and code interp for package prefer propagation

The codethread init_script now propagates package prefer via a new %packageprefer% scriptmap entry. The code interp (punk/0 repltype) creation replaces the manual epoch-only copy with punk::lib::interp_sync_package_paths code -libunknown 1, which propagates tm list, auto_path, package prefer, and libunknown epoch+init from the codethread to the code interp. This fixes the issue where package prefer latest set in punk_main.tcl was not inherited by the REPL's code interp, causing 999999.0a1.0 dev modules to be passed over in favour of stable VFS-bundled versions.

src/modules/punk/repl-999999.0a1.0.tm

@@ -3197,6 +3197,7 @@ namespace eval repl {
                                                     }    %tmlist%               [list [tcl::tm::list]]              {*}{
                                                     }    %autopath%             [list $::auto_path]                 {*}{
                                                     }    %lib_epoch%            [list $::punk::libunknown::epoch]   {*}{
+                                                    }    %packageprefer%        [list [package prefer]]            {*}{
                                                     }
                                              ]
         #scriptmap applied at end to satisfy silly editor highlighting.
@@ -3211,6 +3212,7 @@ namespace eval repl {
             #this sets the auto_path in the thread but outside of the code interp that will be created.
             #It will also need to be added in that interp
             set ::auto_path %autopath%
+            package prefer %packageprefer%
             set tclmajorv [lindex [split [tcl::info::tclversion] .] 0]
             #jmn
             #puts stdout "CODETHREAD tm list"
@@ -3604,13 +3606,10 @@ namespace eval repl {
                 }
                 punk - 0 {
                     interp create code
-                    code eval       [list namespace eval ::punk::libunknown {}]
-                    catch {
-                        #JJJ REVIEW.
-                        #If libunknown was loaded when packages already in the package database
-                        #then the epoch info may be wrong.
-                        code eval   [list set ::punk::libunknown::epoch $::punk::libunknown::epoch]
-                    }
+                    #use punk::lib helper to propagate tm list, auto_path, package prefer,
+                    #and libunknown epoch + init from this codethread to the code interp.
+                    package require punk::lib
+                    punk::lib::interp_sync_package_paths code -libunknown 1
                 }
                 punkisland {
                     interp create code

src/modules/punk/repl-buildversion.txt

@@ -1,6 +1,8 @@
-0.1.6
+0.2.0
 #First line must be a semantic version number
 #all other lines are ignored.
+#0.2.0 - codethread init_script now propagates package prefer via %packageprefer% scriptmap entry
+#0.2.0 - code interp (punk/0 repltype) now uses punk::lib::interp_sync_package_paths -libunknown 1 instead of manual epoch-only copy, propagating tm list, auto_path, package prefer, and libunknown to the code interp
 #0.1.6 - repl::init routes default console construction through punk::console::default_console (also gains the probe-byte store unification)
 #0.1.5 - repl::init comment updated: ambiguous capability settles at first console use via punk::console::settle_can_respond (no behaviour change)
 #0.1.4 - repl::init constructs the process-default console object (opunk::console instance: default) and settles can_respond 1 for interactive stdin (negative settle deliberately not done at init - see comment)