Agent: add max length constraints to tool string inputs

[federiconeri]

Summary

Several agent tool schemas accept unbounded z.string() inputs. An LLM producing very long strings could bloat memory.jsonl or exceed GitHub API limits (65,535 chars for comments).

Problem / Context

Affected fields:

• writeMemory content — no .max(), could bloat memory store
• reflectOnWork whatWorked/whatFailed/lessonsLearned — no limit
• commentOnIssue body — GitHub silently truncates at 65K chars
• createTechDebtIssue body — same GitHub limit

Proposed Solution

Add .max() constraints to zod schemas:

• Memory content: .max(4000)
• Reflection fields: .max(2000)
• GitHub comment/issue body: .max(60000)

Files to Modify

File	Changes
src/agent/tools/memory.ts	Add .max() to content and reflection fields
src/agent/tools/reporting.ts	Add .max() to body fields

Acceptance Criteria

• All string tool inputs have reasonable max length constraints
• Schema validation rejects oversized inputs before API calls
• Existing tests pass

[federiconeri]

Started work on this issue via feature tool-input-max-length. Current loop log shows the run initialized branch/spec and entered planning, but stopped during the planning phase before implementation:

• Baseline tests: passing
• Log tail ends at PLANNING PHASE with no completed plan/PR output
• Current assessed state recommendation: generate_plan

I will need to resume by running the development loop again to generate the plan and continue through implementation/PR.

[federiconeri]

Progress update: I resumed the feature loop for max-length-tool-inputs.

Loop log summary:

• Plan exists but branch has no diff to main — work already merged.
• already complete, nothing to do.

However, post-run feature-state assessment still reports resume_implementation (plan 17/20 tasks, no PR detected), so this issue is not verifiably shipped via a merged PR yet according to the state checker. I’m leaving the issue open and moving to the next scoped item, then will return if needed after additional reconciliation.