Follow-ups from #441: secret-helper migration, ten more bug fixes, and coverage for every remaining untested module (#444)

* refactor(web): use canonical secret helpers in api_v3; make ConfigManager secret strip/merge array-aware

api_v3.py carried three inline nested copies of find_secret_fields/
separate_secrets (main-config save, plugin-config save, plugin-config
reset). They drifted from each other (one lacked isinstance guards) and
none supported the canonical module's array-item secrets
(accounts[].token). All three endpoints now import from
src/web_interface/secret_helpers.

Adopting the canonical behavior makes array-item secrets reachable, and
their parallel-placeholder shape ([{'token': ...}, {}] alongside the
regular list) was not survivable by ConfigManager's round-trip:
_strip_secrets_recursive dropped the whole key (losing the regular
fields from config.json) and _deep_merge replaced the regular list
wholesale on load. Both are now array-aware:

- strip removes the secret fields from each item and ALWAYS keeps the
  list so indices survive for merge-on-load; whole-key secrets (scalar
  lists, shape mismatches) still drop the key entirely — never leak.
- merge folds each secrets item into the config item at the same index,
  skipping {} placeholders. The regular list's length is authoritative
  in both directions: a user deleting an array item never has it
  resurrected from a stale secrets entry (extras warn and are ignored).

api_v3's own deep_merge intentionally still replaces lists wholesale —
form posts carry complete arrays and index-merging would resurrect
deleted items; a comment now documents that.

Tests: the parity guard flips from 'exactly 3 inline copies' to 'zero,
and the canonical import must exist'; TestArraySecretStripAndMerge
covers the new strip/merge semantics incl. length-mismatch contracts;
new test_api_v3_secret_roundtrip.py drives all three endpoints through
a Flask client with a REAL ConfigManager+SchemaManager over tmp_path,
proving secrets land in config_secrets.json, config.json stays clean,
and a fresh load merges them back into the right array items.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NohXi78cwsAKtN1sCfxjUh

* fix: repair broken helper paths across display, cache, odds, logging, resolver, repos, config, validator

Nine fixes for bugs surfaced while writing coverage for previously
untested modules (plus the bool-duration quirk pinned in PR #441):

- base_plugin.get_display_duration: exclude bools from both numeric
  branches — display_duration=True no longer reads as a 1-second slot;
  it falls through to config, then the 15.0 default.
- display_helper: draw_error_message/draw_no_data_message called
  _draw_centered_text with the wrong arguments and crashed with
  AttributeError — both now delegate to draw_centered_text.
  draw_scorebug_layout drew status and clock at the same y, overprinting
  each other — they now share one combined top line.
  draw_ticker_layout drew its text starting at x=display_width (fully
  off-canvas), returning a blank frame every time — now draws at x=0;
  scroll_speed stays accepted-but-unused and is documented as such.
- api_helper.clear_cache guarded on a nonexistent CacheManager.clear()
  method, silently never clearing anything; it now uses the real surface
  (clear_cache/delete/list_cache_files) and no-ops safely otherwise.
- base_odds_manager._extract_espn_data raised AttributeError when ESPN
  sent explicit JSON nulls ("homeTeamOdds": null) — every level now
  null-safes with 'or {}'. format_odds_summary gated on
  is_odds_available, which deliberately ignores money lines, so
  ML-only odds formatted as "No odds available" — it now gates only on
  empty/no_odds data and formats money lines.
- logging_config.ContextualFormatter mutated record.msg in place, so a
  second handler prepended the context prefix twice; it now formats a
  copy. log_error hardcoded exc_info=True and raised TypeError when the
  caller passed exc_info — now kwargs.setdefault.
- dynamic_team_resolver wrote its "shared" class cache through self,
  creating instance shadows — the cache was per-instance and every
  scoreboard refetched rankings. Writes now go through the class.
- saved_repositories cleaned URLs with an unanchored .replace('.git','')
  that mangled URLs merely containing '.git' (my.github.io -> myhub.io);
  now strips only a trailing suffix. add/remove also roll back the
  in-memory list when the save fails, so memory always matches disk.
- config_helper.merge_configs shallow-copied the base, aliasing every
  un-overridden nested dict into the result — now deep-copies.
- startup_validator.validate_all accumulated errors/warnings across
  calls — now resets both lists per run.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NohXi78cwsAKtN1sCfxjUh

* test: cover the previously untested modules

Nine new suites plus an extension, asserting the Phase-1b fixed behavior
and pinning the quirks deliberately left alone:

- test_logging_config.py: formatters (JSON shape, no record mutation,
  single prefix through two handlers), PluginLoggerAdapter precedence,
  setup_logging handler hygiene and LEDMATRIX_DEBUG, log_error exc_info.
- test_startup_validator.py: exact messages, error-vs-warning split,
  accessor split (load_config vs get_config), cache-dir branches with
  os.access monkeypatched (root can write anything in CI), idempotence,
  raise_on_errors classification precedence.
- test_config_helper.py (full): load/save round trips, dot-notation
  get/set incl. silent-failure contract, post-fix no-aliasing merge,
  schema validation branches, the '{id}_config' key pin, default-enabled
  pin.
- test_saved_repositories.py: three load shapes, bare-list rewrite pin,
  trailing-only .git strip (my.github.io regression), save-failure
  rollback, type-classification case-sensitivity pin.
- test_api_helper.py: rate-limit math, cache-hit short circuit, ESPN
  URL/key formats, exact User-Agent guard, retry adapter, post-fix
  clear_cache against the real CacheManager surface, ttl-dropped pin.
- test_base_odds_manager.py: cache-key/URL construction, no_odds
  sentinel round trip, stale-cache fallback, null-safe extraction,
  ML-only formatting, is_odds_available truth table (ML-blind by
  contract), config key/attr mismatch pin.
- test_dynamic_team_resolver.py: expansion/dedup/slicing, dropped
  unknown-dynamic names (TOP_ substring hazard pinned), genuinely
  shared class cache (second instance: zero HTTP), TTL expiry,
  failure degradation without raising.
- test_display_helper.py (full): the fixed error/no-data renders,
  combined scorebug top line, non-blank ticker with scroll_speed
  no-op pin, composite upconversion, logo bleed positions, square
  orientation pin.
- test_skin_runtime_cache.py: discovery-cache hit/invalidation
  semantics (manifest mtime, .py edits pinned as non-invalidating),
  sys.modules namespacing contract incl. bare-name restore and stdlib
  shadowing, entry-module execute-once, API minor-version tolerance,
  skin_matches_target table.
- test_sports_capabilities.py (extended): _draw_celebration_layout
  executed for real (flash window, matrix-dims fallback, highlight
  alternation, logo-failure isolation), _should_celebrate_for direct,
  strict duration boundary, score_to_int edges, both-teams-score
  precedence, expired-coalesce refire, disabled-win baseline
  preservation, id-less prune.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NohXi78cwsAKtN1sCfxjUh

* test: real schedule/dim coverage for DisplayController; fix two vacuous schedule tests

New test_display_controller_schedule.py drives _check_schedule and
_check_dim_schedule on a bare controller stub: same-day and
midnight-crossing windows with inclusive boundaries, global vs per-day vs
legacy-inferred modes (and dim's global-only default — no legacy
inference), per-day disabled days, invalid %H:%M fallbacks, unknown
timezone -> UTC, dim_brightness default 30, inactive-display short
circuit, and the _was_display_active/_was_dimmed transition flags.

test_display_controller.py's test_schedule_disabled and
test_active_hours patched config_service.get_config — which
_check_schedule never reads — so both asserted the init-default value
and could not fail. Rewritten on the test_inactive_hours pattern
(inject controller.config['schedule'], reset the minute gate, flip the
flag to the opposite state first so the assertion has teeth).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NohXi78cwsAKtN1sCfxjUh

* ci: raise coverage floor to 48%

Measured 50% with the new suites in place (was 47% baseline when the
gate was introduced at 45); floor stays two points under measured.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NohXi78cwsAKtN1sCfxjUh

* fix: address CodeQL alert and review findings

- config_manager: the "secrets list longer than config list" warning now
  interpolates only config-side data (no key name or secrets-derived
  values), resolving the CodeQL clear-text-logging alert.
- base_plugin: validate_config rejects bool display_duration, matching
  get_display_duration (bool is an int subclass and would otherwise pass
  as a positive number).
- config_helper: merge_configs deep-copies override values in the
  non-recursive branch so mutating the merged result cannot reach back
  into override_config.
- saved_repositories: saves are atomic (temp file + fsync + os.replace),
  so a failed write can no longer truncate saved_repositories.json.
- tests: regression cases for each fix, plus a pin that whole-item
  array secrets (key[] + key[].field both marked) strip to empty {}
  skeletons — no secret values can reach config.json.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NohXi78cwsAKtN1sCfxjUh

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/logging_config.py

@@ -5,6 +5,7 @@ Provides consistent logging configuration across the LEDMatrix application.
 Supports structured logging with context information and appropriate log levels.
 """
 
+import copy
 import logging
 import sys
 import os
@@ -65,24 +66,29 @@ class ContextualFormatter(logging.Formatter):
         self.include_context = include_context
     
     def format(self, record: logging.LogRecord) -> str:
-        """Format log record with context."""
-        # Add context to message if present
+        """Format log record with context.
+
+        Works on a shallow copy of the record: a record is formatted once
+        PER HANDLER, so mutating record.msg in place (the old behavior)
+        prepended the context prefix again for every additional handler.
+        """
         if self.include_context:
             context_parts = []
-            
+
             if hasattr(record, 'plugin_id'):
                 context_parts.append(f"[Plugin: {record.plugin_id}]")
-            
+
             if hasattr(record, 'operation_id'):
                 context_parts.append(f"[Op: {record.operation_id}]")
-            
+
             if hasattr(record, 'context') and isinstance(record.context, dict):
                 for key, value in record.context.items():
                     context_parts.append(f"[{key}: {value}]")
-            
+
             if context_parts:
+                record = copy.copy(record)
                 record.msg = ' '.join(context_parts) + ' ' + str(record.msg)
-        
+
         return super().format(record)
 
 
@@ -224,8 +230,11 @@ def log_warning(logger: logging.Logger, message: str, **kwargs) -> None:
 
 
 def log_error(logger: logging.Logger, message: str, **kwargs) -> None:
-    """Log error message with context."""
-    log_with_context(logger, logging.ERROR, message, **kwargs, exc_info=True)
+    """Log error message with context. Defaults exc_info=True; a caller
+    passing exc_info explicitly wins (the old hardcoded keyword raised
+    TypeError on that duplicate)."""
+    kwargs.setdefault('exc_info', True)
+    log_with_context(logger, logging.ERROR, message, **kwargs)
 
 
 def log_debug(logger: logging.Logger, message: str, **kwargs) -> None: