diff --git a/CHANGELOG.md b/CHANGELOG.md
index eedc8403..5148ec58 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ The latest `## [X.Y.Z]` header must match the `version` field in `punkproject.to
 Entries are newest-first; one bullet per notable change. See the root `AGENTS.md`
 "Project Versioning" section for the bump policy.
 
+## [0.12.16] - 2026-07-13
+
+- tclcore moduledoc 0.3.0: 'after cancel <word>' and 'after info <id>' now discriminate by the after-id shape, harvested from the running interpreter at load time (user-directed). 'i after cancel someid' resolves cleanly to the cancel-script form exactly as real Tcl treats it (silent script-match no-op), and only genuinely id-shaped words ('after#N') report the cancelid/cancelscript ambiguity - the junction real Tcl itself resolves by id liveness at runtime. Parity pins added (tclcoreparity.test) including the accepted dead-id over-acceptance boundary.
+
 ## [0.12.15] - 2026-07-13
 
 - G-041 doc surface: the help system presents the command form matching the supplied words - 'i after cancel <id>' presents the cancel form's argument table (candidates are named when no form or several forms match, e.g 'after cancel someid' reports the genuine cancelid/cancelscript ambiguity of the documented forms), and 's after cancel someid' underlines the matching synopsis line(s) (punk::ns 0.5.0). punk::args 0.11.0: the documented @form -synopsis override now renders in synopsis output, and candidate-form ranking recognises -choices discriminators (the tclcore models' subcommand words) via the shared choice resolver.
diff --git a/goals/G-055-tclcore-regen-workflow.md b/goals/G-055-tclcore-regen-workflow.md
index dc4e5fa1..3b275b3b 100644
--- a/goals/G-055-tclcore-regen-workflow.md
+++ b/goals/G-055-tclcore-regen-workflow.md
@@ -147,7 +147,13 @@ other commands including the multi-form ::after.
     after#-shaped - real Tcl resolves by id LIVENESS at runtime (tries id
     first, falls back to script match), which no static type expresses; the
     G-074 sanction then covers exactly that id-shaped witness rather than the
-    whole form pair.
+    whole form pair. APPLIED 2026-07-13 (tclcore moduledoc 0.3.0, user-directed):
+    both ids typed stringstartswith(<harvested prefix>) via a build-time
+    %AFTERIDPREFIX% string map (note for the workflow: tstr ${...} in
+    non-display fields is NOT expanded for plain PUNKARGS definitions - G-046
+    defers display fields only; parse-field interpolation needs the explicit
+    tstr wrap, as ::tcl::string::is does, or a string-map token); parity pins
+    in tclcoreparity.test including the accepted dead-id divergence.
   - TIP 746 (user-flagged 2026-07-12,
     https://core.tcl-lang.org/tips/doc/trunk/tip/746.md) removes the expr
     behaviour from lseq operands in Tcl 9.1: the lseq model's number|expr operand
diff --git a/punkproject.toml b/punkproject.toml
index c21eff18..d07dabf6 100644
--- a/punkproject.toml
+++ b/punkproject.toml
@@ -1,4 +1,4 @@
 [project]
 name = "punkshell"
-version = "0.12.15"
+version = "0.12.16"
 license = "BSD-2-Clause"
diff --git a/src/modules/punk/args/moduledoc/tclcore-999999.0a1.0.tm b/src/modules/punk/args/moduledoc/tclcore-999999.0a1.0.tm
index 1a2a85d5..6c37291e 100644
--- a/src/modules/punk/args/moduledoc/tclcore-999999.0a1.0.tm
+++ b/src/modules/punk/args/moduledoc/tclcore-999999.0a1.0.tm
@@ -4527,7 +4527,27 @@ tcl::namespace::eval punk::args::moduledoc::tclcore {
     ############################################################################################################################################################
 
 
-    lappend PUNKARGS [list {
+    # -- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
+    #the after-id shape is harvested from the RUNNING interpreter (G-054 technique;
+    #user-directed 2026-07-13, probe record in goals/G-055) rather than hard-coded:
+    #a scheduled command's id is "after#N" in all known releases (tclTimer.c
+    #"after#%d"), and the cancelid/info forms use it as their id discriminator so
+    #accept/reject parity follows the interpreter these docs load into.
+    #The probe is safe: create + immediately cancel - no event loop entry, no output,
+    #no lasting state.
+    set after_id_prefix "after#"
+    if {![catch {after 999999 {}} _aip_id]} {
+        catch {after cancel $_aip_id}
+        if {[regexp {^(.+#)\d+$} $_aip_id -> _aip_prefix]} {
+            set after_id_prefix $_aip_prefix
+        }
+    }
+    #the %AFTERIDPREFIX% token below is substituted at build time (string map) because
+    #tstr ${...} in non-display fields is not expanded for plain PUNKARGS definitions
+    #(G-046 defers display fields only; the %TYPECHOICES% pattern in punk::args' own
+    #argdocs is the precedent)
+    # -- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
+    lappend PUNKARGS [list [string map [list %AFTERIDPREFIX% $after_id_prefix] {
         #test of @form
         @id     -id ::after
         @cmd    -name "Built-in: after"\
@@ -4570,7 +4590,15 @@ tcl::namespace::eval punk::args::moduledoc::tclcore {
         @leaders                            -min 1 -max 1
         cancel                              -choices {cancel}
         @values                             -min 1 -max 1
-        id
+        #id typed by the harvested id shape: a word of any other shape belongs to the
+        #cancelscript form (real 'after cancel <non-id>' is a script-match no-op).
+        #An id-SHAPED word remains genuinely ambiguous with a script of the same text -
+        #real Tcl resolves that by id liveness at runtime (tries the id first, falls
+        #back to script match), which no static type expresses (goals/G-055 record).
+        id -type stringstartswith(%AFTERIDPREFIX%) -typesynopsis id -help\
+            "Identifier of the delayed command to cancel.
+            It must have been the return value from a previous
+            after command (%AFTERIDPREFIX%N shaped)."
 
 
         #@form   -form   {cancelscript}      -synopsis "after cancel script ?script...?"
@@ -4593,9 +4621,15 @@ tcl::namespace::eval punk::args::moduledoc::tclcore {
         @leaders                            -min 1 -max 1
             info                            -choices {info} -choiceprefixreservelist {idle}
         @values                             -min 0 -max 1
-            id                              -optional 1
-
-    } "@doc -name Manpage: -url [manpage_tcl after]"\
+            #real 'after info <non-id-shaped-word>' errors at runtime ("event ... doesn't
+            #exist") - the model's shape rejection keeps error-vs-ok parity
+            id                              -optional 1 -type stringstartswith(%AFTERIDPREFIX%) -typesynopsis id -help\
+                "Identifier of an existing event handler - the
+                return value from some previous call to after
+                (%AFTERIDPREFIX%N shaped). It must not have triggered
+                yet or been canceled."
+
+    }] "@doc -name Manpage: -url [manpage_tcl after]"\
     {
     @examples -help {
         This defines a command to make Tcl do nothing at all for N seconds:
diff --git a/src/modules/punk/args/moduledoc/tclcore-buildversion.txt b/src/modules/punk/args/moduledoc/tclcore-buildversion.txt
index d37c03c9..c85c2e1e 100644
--- a/src/modules/punk/args/moduledoc/tclcore-buildversion.txt
+++ b/src/modules/punk/args/moduledoc/tclcore-buildversion.txt
@@ -1,4 +1,5 @@
-0.2.0
+0.3.0
 #First line must be a semantic version number
 #all other lines are ignored.
+#0.3.0 - ::after cancel-id discrimination (user-directed 2026-07-13): the cancelid and info forms' id argument is typed stringstartswith(<prefix>) with the prefix harvested from the RUNNING interpreter at define time (safe create+cancel probe 'after 999999 {}' / 'after cancel $id' - G-054 technique; prefix is after# on 8.6.11 and 9.0.3, hardcoded after#%d in tclTimer.c), substituted into the definition via a build-time %AFTERIDPREFIX% string map (tstr ${...} in non-display fields is not expanded for plain PUNKARGS definitions - G-046 defers display fields only). -typesynopsis id keeps the synopsis rendering as the man page's 'id'. Effect under G-041 form candidacy: 'after cancel <non-id-shaped-word>' resolves cleanly to the cancelscript form matching real semantics (real 'after cancel' with a non-id is a silent script-match no-op), and 'after info <non-id>' is model-rejected where real errors at runtime (parity-true); an id-SHAPED word after cancel remains truthfully ambiguous (cancelid+cancelscript) - real Tcl resolves that junction by id liveness at runtime, which no static type expresses; dead-id over-acceptance on 'after info' recorded as the accepted runtime-liveness boundary. Both ids gain man-page-derived -help text. Parity pins added in tclcoreparity.test (id-shape harvest agreement, cancel discrimination incl the liveness ambiguity, info error-vs-ok parity + accepted dead-id divergence).
 #0.2.0 - G-054: 'string is' class choices (and the generated per-class virtual docids) are harvested from the RUNNING interpreter at define time instead of a hand-maintained list - a deliberately invalid probe of the builtin yields the authoritative class set from its error message (8.6: 21 classes, no dict; unreleased 8.7: +dict +unicode; 9.0: +dict, unicode removed), fixing accept/reject drift such as the doc wrongly accepting 'string is dict' under 8.6. Hand-written man-page descriptions apply only to classes the runtime accepts (generic label for unrecognized future classes); static version notes on dict (not in 8.6) and unicode (unreleased 8.7 only). Parity pinned by tclcoreparity.test with expectations derived from the live interpreter (green on 8.6.13, 8.7a6, 9.0.3)
diff --git a/src/tests/modules/punk/args/testsuites/args/tclcoreparity.test b/src/tests/modules/punk/args/testsuites/args/tclcoreparity.test
index 5aef3278..5e553c53 100644
--- a/src/tests/modules/punk/args/testsuites/args/tclcoreparity.test
+++ b/src/tests/modules/punk/args/testsuites/args/tclcoreparity.test
@@ -147,5 +147,68 @@ namespace eval ::testspace {
         -cleanup {
         }\
         -result [list [expr {"dict" in [live_classes]}] [expr {"unicode" in [live_classes]}] 1]
+
+    #--- ::after cancel-id discrimination (user-directed 2026-07-13; probe record in
+    #--- goals/G-055) - the cancelid/info forms' id is typed by the id shape harvested
+    #--- from the running interpreter, so 'after cancel <non-id>' resolves to the
+    #--- cancelscript form exactly as real Tcl treats it (silent script-match no-op).
+    #added 2026-07-13 (agent, G-055 subject matter, post G-041)
+
+    test tclcoreparity_after_id_shape_harvested {the doc model's id type matches the shape of ids the running interpreter actually issues}\
+        -constraints have_tclcoredocs\
+        -setup $common -body {
+            #live id shape (create + immediately cancel - no event loop, no lasting state)
+            set liveid [after 999999 {}]
+            after cancel $liveid
+            set doctype [dict get [punk::args::get_spec ::after] FORMS cancelid ARG_INFO id -type]
+            lappend result [string match {stringstartswith(*)} $doctype]
+            set docprefix [string range $doctype 17 end-1]
+            lappend result [string match "${docprefix}*" $liveid]
+            #info form uses the same shape
+            lappend result [string equal $doctype [dict get [punk::args::get_spec ::after] FORMS info ARG_INFO id -type]]
+        }\
+        -cleanup {
+        }\
+        -result [list 1 1 1]
+
+    test tclcoreparity_after_cancel_discrimination {'after cancel <word>' form resolution matches real semantics: non-id words are scripts, id-shaped words are the genuine liveness ambiguity}\
+        -constraints have_tclcoredocs\
+        -setup $common -body {
+            #real: 'after cancel someid' is a silent script-match no-op - model: cancelscript
+            lappend result [expr {![catch {after cancel someid}]}]
+            set ps [punk::args::parse_status {cancel someid} withid ::after]
+            lappend result [dict get $ps ok] [dict get $ps form]
+            #multi-word script tail
+            set ps [punk::args::parse_status {cancel puts hi} withid ::after]
+            lappend result [dict get $ps ok] [dict get $ps form]
+            #id-SHAPED word: truthfully ambiguous (a script can carry the same text -
+            #real Tcl resolves by id liveness at runtime, which no static type expresses)
+            set liveid [after 999999 {}]
+            after cancel $liveid
+            set ps [punk::args::parse_status [list cancel $liveid] withid ::after]
+            lappend result [dict get $ps ok] [dict get $ps failureclass]
+            lappend result [lsort [dict keys [dict get $ps formstatus]]]
+        }\
+        -cleanup {
+        }\
+        -result [list 1 1 cancelscript 1 cancelscript 0 multipleformmatches {cancelid cancelscript}]
+
+    test tclcoreparity_after_info_id_parity {'after info <word>' error-vs-ok outcome agrees for non-id-shaped words; dead-id over-acceptance is the accepted runtime-liveness boundary}\
+        -constraints have_tclcoredocs\
+        -setup $common -body {
+            #non-id-shaped word: real errors ("event ... doesn't exist"), model rejects the shape
+            lappend result [expr {![catch {after info someid}]}]
+            lappend result [dict get [punk::args::parse_status {info someid} withid ::after] ok]
+            #bare 'after info' is valid on both sides
+            lappend result [expr {![catch {after info}]}]
+            lappend result [dict get [punk::args::parse_status {info} withid ::after] ok]
+            #accepted divergence (over-acceptance class, goals/G-055): a DEAD id-shaped
+            #word - real errors on liveness, the model accepts the shape
+            lappend result [expr {![catch {after info after#999999999}]}]
+            lappend result [dict get [punk::args::parse_status {info after#999999999} withid ::after] ok]
+        }\
+        -cleanup {
+        }\
+        -result [list 0 0 1 1 0 1]
 }
 tcltest::cleanupTests ;#needed to produce test summary line.