Wraps each static system prompt in a single-block list so Phase 0.1's
AnthropicProvider applies cache_control: ephemeral automatically (policy α,
first block gets marked when no caller-authored cache_control is present).
Call sites:
- ai_tree_generator.scaffold_branches: SCAFFOLD_SYSTEM_PROMPT (~1k tokens)
- ai_tree_generator.generate_branch_detail: BRANCH_DETAIL_SYSTEM_PROMPT
(~2.5k tokens with few-shot example); retries inside the same function
re-read the cached block instead of paying full input cost on each attempt
- kb_conversion.convert_document: TROUBLESHOOTING or PROCEDURAL prompt
(each caches independently by text content)
- ai_fix.generate_fixes: FIX_SYSTEM_PROMPT on first attempt + corrective retry
- script_builder.send_message: SYSTEM_PROMPT_TEMPLATE (per-session language
substitution — same-language sessions share cache entries)
Each edit includes an inline comment explaining why the block is cacheable
(stable-constant, retry-reuse, per-language variant) so a future dev can
see the intent at the cache_control marker site.
script_builder history caching deliberately deferred — per Phase 0.1
decision (option i), AnthropicProvider does not automatically cache the
message list. If script_builder's growing 20-message history turns out
to be a visible cost driver via the anthropic.cache telemetry, route
that caller through the 0.4 chat wrapper which handles history caching.
No runtime verification from code-server; cache-hit behavior will be
confirmed against the new dev environment when it's up, per the inline
TODO(phase0-verify) in ai_provider.py.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- script_builder endpoint: pg_advisory_xact_lock on user_id before
session count check, preventing concurrent creates from both passing
the MAX_SESSIONS_PER_USER guard
- script_builder_service send_message: pg_advisory_xact_lock on session_id
before message count check, preventing concurrent sends from both
passing the MAX_MESSAGES_PER_SESSION guard
- script_builder_service save_to_library: replace check-then-insert slug
logic with IntegrityError retry loop (3 attempts with fresh UUID suffix);
add unique constraint on script_templates.slug (migration 070)
- ScriptBuilderPage: add creatingSessionRef to serialize concurrent
handleSend calls that would otherwise both call createSession() while
session is still null
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Previously save_to_library() hardcoded parameters_schema to empty and
always used session.latest_script. Now accepts optional overrides from
the frontend for parameterized script bodies.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Extract JSONB messages array from script_builder_sessions into a proper
script_builder_messages table with individual columns for role, content,
script, tokens, etc. Migration handles data migration from JSONB to rows.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Also fix bug in save_to_library: remove invalid 'language' kwarg
passed to ScriptTemplate constructor (column doesn't exist on model).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Script Builder service with language-specific system prompts (PowerShell, Bash, Python)
- AI-powered script generation with code block extraction and filename detection
- Context window management (last 20 messages) and session message limits
- REST API: CRUD sessions, send messages, save to Script Library
- Rate limiting on message endpoint (10/min), max 5 concurrent sessions per user
- Registered script_build action in AI model tier routing (standard tier)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
