M8: redaction code sets (U.S. FOIA, Privacy Act) as overlay text (#741)

* M8: redaction code sets (U.S. FOIA, Privacy Act) as overlay text

Redaction properties offers "Custom text" or "Redaction code" under "Use overlay
text". Picking the U.S. FOIA (5 U.S.C. 552(b)) or U.S. Privacy Act (552a) set and
ticking codes makes new marks carry them as overlay text, in the set's order.
redact_mark takes code_set and codes and rejects unknown sets or codes with the
allowed list.

Also merges a duplicated evidence/notes pair in form.field-list that made
parity/acrobat-features.toml fail to parse on main.

* M8: say why the default redaction code set can't fail

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Tests: pin the clock in form_bulk (saves a second apart differed in /ModDate on Windows CI)

---------

Co-authored-by: Brandon Thomas <echelon@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

parity/acrobat-features.toml

@@ -4302,10 +4302,8 @@ milestone = "M3"
 status = "shipped"
 commands = ["form.fields"]
 tools = ["doc_info"]
-evidence = ["crates/ui-egui/tests/view.rs::field_list_jumps_to_a_fields_page", "crates/render/src/inspect.rs::fields_listed_only_on_the_pages_are_listed"]
-notes = "read-only list with jump-to-field; filling and editing are separate features (M6); fields a file lists only as page widgets (empty /Fields) are adopted too"
-evidence = ["crates/ui-egui/tests/view.rs::field_list_jumps_to_a_fields_page", "crates/ui-egui/tests/bulk_fields.rs::fields_panel_selects_multiple_fields_and_opens_their_shared_properties", "crates/ui-egui/tests/bulk_fields.rs::double_clicking_a_field_in_the_panel_opens_its_individual_properties"]
-notes = "list with jump-to-field; in Prepare a form, Shift/Ctrl/Command-click selects several fields and Properties edits their shared properties; double-click opens field properties"
+evidence = ["crates/ui-egui/tests/view.rs::field_list_jumps_to_a_fields_page", "crates/render/src/inspect.rs::fields_listed_only_on_the_pages_are_listed", "crates/ui-egui/tests/bulk_fields.rs::fields_panel_selects_multiple_fields_and_opens_their_shared_properties", "crates/ui-egui/tests/bulk_fields.rs::double_clicking_a_field_in_the_panel_opens_its_individual_properties"]
+notes = "list with jump-to-field; in Prepare a form, Shift/Ctrl/Command-click selects several fields and Properties edits their shared properties; double-click opens field properties; fields a file lists only as page widgets (empty /Fields) are adopted too"
 
 [[feature]]
 id = "form.highlight-fields"
@@ -5581,7 +5579,7 @@ status = "partial"
 commands = ["redact.properties"]
 tools = ["redact_mark"]
 evidence = ["crates/ui-egui/tests/redact.rs::marking_applying_and_clearing", "crates/redact/src/tests.rs::overlay_text_takes_its_font_size_colour_alignment_and_repeats"]
-notes = "fill colour or none; overlay text with font, size or auto-size, colour, alignment and repeat; redaction codes pending"
+notes = "fill colour or none; overlay text with font, size or auto-size, colour, alignment and repeat, or redaction codes (protect.redaction-codes)"
 
 [[feature]]
 id = "protect.redaction-codes"
@@ -5589,11 +5587,11 @@ title = "Redaction code sets (e.g. FOIA exemptions)"
 area = "G"
 tier = "P1"
 milestone = "M8"
-status = "planned"
-commands = []
-tools = []
-evidence = []
-notes = ""
+status = "partial"
+commands = ["redact.properties"]
+tools = ["redact_mark"]
+evidence = ["crates/redact/src/tests.rs::redaction_codes_join_in_set_order_and_reject_strangers", "crates/automation/tests/automation.rs::redacting_with_codes_through_tools", "crates/ui-egui/tests/redact.rs::redaction_codes_become_the_overlay_text"]
+notes = "built-in U.S. FOIA (5 U.S.C. 552(b)) and U.S. Privacy Act (552a) sets; picked codes become the overlay text, in the set's order. Missing: Edit Codes, custom code sets, import/export of code sets"
 
 [[feature]]
 id = "protect.apply-redactions"